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span></span><span
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span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>To locate=
 (x, y),
 start </span></span><span style=3D'position:absolute;top:42.25%;left:54.3%;
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0%'><span
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unt to
 move &#13;</span></div>
 <div style=3D'position:absolute;top:54.5%;left:54.3%;width:44.0%;height:6.=
0%'><span
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.0%'><span
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unt to
 move&#13;</span></div>
 <div style=3D'position:absolute;top:67.0%;left:54.3%;width:44.0%;height:6.=
0%'><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>up (+) or=
 down
 (&#8211;).</span></div>
 </div>
</p:slide></div>

</body>

</html>

------=_NextPart_01C82E62.66022B30
Content-Location: file:///C:/EDCB5D0D/1RectangularCoordinateSystem_files/slide0060.htm
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 top:80.0%;left:4.3%;width:90.63%;height:6.0%'><span lang=3DEN-US
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om the
 orgin.</span></div>
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 <div v:shape=3D"_x0000_s69640" class=3DO style=3D'mso-char-wrap:0;mso-kins=
oku-overflow:
 0;position:absolute;top:2.25%;left:17.79%;width:75.65%;height:6.75%'><span
 lang=3DEN-US style=3D'mso-hansi-font-family:Arial;font-size:178%;color:bla=
ck;
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m</span></div>
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 top:11.0%;left:54.3%;width:47.75%;height:6.0%'><span lang=3DEN-US
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e </span></span><span
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><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>may be ad=
dressed
 by </span></span><span style=3D'position:absolute;top:23.5%;left:54.3%;
 width:52.05%;height:6.0%'><span lang=3DEN-US style=3D'font-size:156%;mso-f=
areast-language:
 ZH-CN'>two numbers (x, y) called </span></span><span style=3D'position:abs=
olute;
 top:29.75%;left:54.3%;width:44.0%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>an </span><span lang=
=3DEN-US
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air</i></span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>. &#13;</=
span></span><span
 style=3D'position:absolute;top:36.0%;left:54.3%;width:44.0%;height:6.0%'><=
span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>To locate=
 (x, y),
 start </span></span><span style=3D'position:absolute;top:42.25%;left:54.3%;
 width:44.0%;height:6.0%'><span lang=3DEN-US style=3D'font-size:156%;mso-fa=
reast-language:
 ZH-CN'>from the orgin (0, 0),&#13;</span></span>
 <div style=3D'position:absolute;top:48.5%;left:54.3%;width:44.0%;height:6.=
0%'><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>x =3D amo=
unt to
 move &#13;</span></div>
 <div style=3D'position:absolute;top:54.5%;left:54.3%;width:44.0%;height:6.=
0%'><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>right (+)=
 or left
 (&#8211;), &#13;</span></div>
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.0%'><span
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unt to
 move&#13;</span></div>
 <div style=3D'position:absolute;top:67.0%;left:54.3%;width:44.0%;height:6.=
0%'><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>up (+) or=
 down
 (&#8211;).</span></div>
 </div>
</p:slide></div>

</body>

</html>

------=_NextPart_01C82E62.66022B30
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<title>Rectangular Coordinate System</title>
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<base
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 corresponds to (4, -3) is&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:80.0%;left:4.3%;width:90.63%;height:6.0%'><span lang=3DEN-US
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 orgin.</span></div>
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oku-overflow:
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 mso-color-index:3;mso-fareast-language:ZH-CN'>Rectangular Coordinate Syste=
m</span></div>
 <div v:shape=3D"_x0000_s70665" class=3DO><span style=3D'position:absolute;
 top:11.0%;left:54.3%;width:47.75%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>Each point in the plan=
e </span></span><span
 style=3D'position:absolute;top:17.25%;left:54.3%;width:44.94%;height:6.0%'=
><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>may be ad=
dressed
 by </span></span><span style=3D'position:absolute;top:23.5%;left:54.3%;
 width:52.05%;height:6.0%'><span lang=3DEN-US style=3D'font-size:156%;mso-f=
areast-language:
 ZH-CN'>two numbers (x, y) called </span></span><span style=3D'position:abs=
olute;
 top:29.75%;left:54.3%;width:44.0%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>an </span><span lang=
=3DEN-US
 style=3D'font-size:156%;color:red;mso-fareast-language:ZH-CN'><i>ordered p=
air</i></span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>. &#13;</=
span></span><span
 style=3D'position:absolute;top:36.0%;left:54.3%;width:44.0%;height:6.0%'><=
span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>To locate=
 (x, y),
 start </span></span><span style=3D'position:absolute;top:42.25%;left:54.3%;
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0%'><span
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unt to
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0%'><span
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unt to
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st-language:
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st-language:
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om the
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span
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oku-overflow:
 0;position:absolute;top:2.25%;left:17.79%;width:75.65%;height:6.75%'><span
 lang=3DEN-US style=3D'mso-hansi-font-family:Arial;font-size:178%;color:bla=
ck;
 mso-color-index:3;mso-fareast-language:ZH-CN'>Rectangular Coordinate Syste=
m</span></div>
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 top:11.0%;left:54.3%;width:47.75%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>Each point in the plan=
e </span></span><span
 style=3D'position:absolute;top:17.25%;left:54.3%;width:44.94%;height:6.0%'=
><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>may be ad=
dressed
 by </span></span><span style=3D'position:absolute;top:23.5%;left:54.3%;
 width:52.05%;height:6.0%'><span lang=3DEN-US style=3D'font-size:156%;mso-f=
areast-language:
 ZH-CN'>two numbers (x, y) called </span></span><span style=3D'position:abs=
olute;
 top:29.75%;left:54.3%;width:44.0%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>an </span><span lang=
=3DEN-US
 style=3D'font-size:156%;color:red;mso-fareast-language:ZH-CN'><i>ordered p=
air</i></span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>. &#13;</=
span></span><span
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span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>To locate=
 (x, y),
 start </span></span><span style=3D'position:absolute;top:42.25%;left:54.3%;
 width:44.0%;height:6.0%'><span lang=3DEN-US style=3D'font-size:156%;mso-fa=
reast-language:
 ZH-CN'>from the orgin (0, 0),&#13;</span></span>
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0%'><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>x =3D amo=
unt to
 move &#13;</span></div>
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0%'><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>right (+)=
 or left
 (&#8211;), &#13;</span></div>
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.0%'><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>y =3D amo=
unt to
 move&#13;</span></div>
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0%'><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>up (+) or=
 down
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oku-overflow:
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 height:6.0%'><span lang=3DEN-US style=3D'font-size:156%;mso-fareast-langua=
ge:ZH-CN'>Points
 on the x-axis have the form (x, 0) and points </span></span><span
 style=3D'position:absolute;top:92.75%;left:4.3%;width:88.95%;height:6.0%'>=
<span
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axis
 have the form (0, y).</span></span></div>
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.49%;
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st-language:
 ZH-CN'>(4, -3)</span></div>
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.75%;
 left:30.33%;width:8.61%;height:4.0%'><span lang=3DEN-US style=3D'mso-farea=
st-language:
 ZH-CN'>4 right</span></div>
 <div v:shape=3D"_x0000_s71695" class=3DO style=3D'position:absolute;top:48=
.25%;
 left:41.01%;width:9.92%;height:4.0%'><span lang=3DEN-US style=3D'mso-farea=
st-language:
 ZH-CN'>3 down</span></div>
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ck;
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m</span></div>
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e </span></span><span
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><span
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dressed
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areast-language:
 ZH-CN'>two numbers (x, y) called </span></span><span style=3D'position:abs=
olute;
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=3DEN-US
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air</i></span><span
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span></span><span
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span
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 start </span></span><span style=3D'position:absolute;top:42.25%;left:54.3%;
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0%'><span
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unt to
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0%'><span
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unt to
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ge:ZH-CN'>Points
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13;</span></div>
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4 </span></span><span
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'><span
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lockwisely.<span
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s of
 the </span></span><span style=3D'position:absolute;top:43.25%;left:43.44%;
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absolute;
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oku-overflow:
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1;,+)</b></span></div>
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211;)</b></span></div>
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m</span></div>
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oku-overflow:
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13;</span></div>
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s of
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oku-overflow:
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 lang=3DEN-US style=3D'font-size:133%;text-shadow:auto;color:red;mso-fareas=
t-language:
 ZH-CN'><b>&#8211;</b></span><span lang=3DEN-US style=3D'font-size:133%;tex=
t-shadow:
 auto;mso-fareast-language:ZH-CN'><b>5,4)</b></span></div>
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 </b></span><span lang=3DEN-US style=3D'font-size:133%;text-shadow:auto;col=
or:red;
 mso-fareast-language:ZH-CN'><b>&#8211;</b></span><span lang=3DEN-US
 style=3D'font-size:133%;text-shadow:auto;mso-fareast-language:ZH-CN'><b>4)=
</b></span></div>
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 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>The axes divide the &#=
13;</span></div>
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 top:18.25%;left:43.44%;width:54.86%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>plane into four </span=
><span
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><i>quadrants,</i></span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN;display:no=
ne'>&#13;</span></div>
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ion:
 absolute;top:24.5%;left:43.44%;width:54.86%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>numbered 1, 2, 3, and =
4 </span></span><span
 style=3D'position:absolute;top:30.75%;left:43.44%;width:54.86%;height:6.0%=
'><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>counter-c=
lockwisely.<span
 style=3D'mso-spacerun:yes'>&nbsp; </span></span></span><span style=3D'posi=
tion:
 absolute;top:37.0%;left:43.44%;width:61.04%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>Respectively, the sign=
s of
 the </span></span><span style=3D'position:absolute;top:43.25%;left:43.44%;
 width:60.86%;height:6.0%'><span lang=3DEN-US style=3D'font-size:156%;mso-f=
areast-language:
 ZH-CN'>coordinates of each quadrant </span></span><span style=3D'position:=
absolute;
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 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>are shown. </span></sp=
an></div>
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oku-overflow:
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ck;
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m</span></div>
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oku-overflow:
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ge:ZH-CN'>The
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-size:
 156%;mso-fareast-language:ZH-CN'>x , y) are reflection of each </span></sp=
an><span
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<span
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oss the
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oku-overflow:
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ge:ZH-CN'>The
 points (x, y) and (x , </span><span lang=3DEN-US style=3D'font-size:156%;
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ach </span></span><span
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<span
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oku-overflow:
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:ZH-CN'><b>(</b></span><span
 lang=3DEN-US style=3D'font-size:133%;text-shadow:auto;color:red;mso-fareas=
t-language:
 ZH-CN'><b>&#8211;</b></span><span lang=3DEN-US style=3D'font-size:133%;tex=
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 auto;mso-fareast-language:ZH-CN'><b>5,4)</b></span></div>
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 </b></span><span lang=3DEN-US style=3D'font-size:133%;text-shadow:auto;col=
or:red;
 mso-fareast-language:ZH-CN'><b>&#8211;</b></span><span lang=3DEN-US
 style=3D'font-size:133%;text-shadow:auto;mso-fareast-language:ZH-CN'><b>4)=
</b></span></div>
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13;</span></div>
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4 </span></span><span
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s of
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 lang=3DEN-US style=3D'font-size:133%;text-shadow:auto;mso-fareast-language=
:ZH-CN'><b>(</b></span><span
 lang=3DEN-US style=3D'font-size:133%;text-shadow:auto;color:red;mso-fareas=
t-language:
 ZH-CN'><b>&#8211;</b></span><span lang=3DEN-US style=3D'font-size:133%;tex=
t-shadow:
 auto;mso-fareast-language:ZH-CN'><b>5, </b></span><span lang=3DEN-US
 style=3D'font-size:133%;text-shadow:auto;color:red;mso-fareast-language:ZH=
-CN'><b>&#8211;</b></span><span
 lang=3DEN-US style=3D'font-size:133%;text-shadow:auto;mso-fareast-language=
:ZH-CN'><b>4)</b></span></div>
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<html xmlns:v=3D"urn:schemas-microsoft-com:vml"
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<title>Rectangular Coordinate System</title>
<![if IE]>
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</script><![endif]--><![endif]><o:shapelayout v:ext=3D"edit">
 <o:idmap v:ext=3D"edit" data=3D"57"/>
</o:shapelayout>
</head>

<body lang=3DEN-US style=3D'margin:0px;background-color:black'
onclick=3D"DocumentOnClick()" onresize=3D"_RSW()" onload=3D"LoadSld()"
onkeypress=3D"_KPH()">

<div id=3DSlideObj class=3Dsld style=3D'position:absolute;top:0px;left:0px;
width:534px;height:400px;font-size:16px;background-color:white;clip:rect(0%=
, 101%, 101%, 0%);
visibility:hidden'><p:slide coordsize=3D"720,540"
 colors=3D"#ffffff,#000000,#808080,#000000,#bbe0e3,#333399,#009999,#99cc00"
 masterhref=3D"master06.xml">
 <p:shaperange href=3D"master06.xml#_x0000_s46081"/><![if !ppt]><p:shaperan=
ge
  href=3D"master06.xml#_x0000_s46084"/><p:shaperange
  href=3D"master06.xml#_x0000_s46085"/><![endif]><v:shapetype id=3D"_x0000_=
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 </v:shapetype><v:shape id=3D"_x0000_s58371" type=3D"#_x0000_t202" style=3D=
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  left:24pt;top:48pt;width:516pt;height:74.5pt;mso-wrap-style:square' fille=
d=3D"f"
  fillcolor=3D"#bbe0e3 [4]" stroked=3D"f" strokecolor=3D"black [1]">
  <v:fill color2=3D"white [0]"/>
  <v:shadow color=3D"gray [2]"/>
  <v:textbox style=3D'mso-fit-shape-to-text:t'/>
 </v:shape><v:rect id=3D"_x0000_s58399" style=3D'position:absolute;left:190=
.375pt;
  top:4.375pt;width:337.625pt;height:45.625pt;mso-wrap-style:none;
  v-text-anchor:top-baseline' filled=3D"f" fillcolor=3D"#bbe0e3 [4]" stroke=
d=3D"f"
  strokecolor=3D"black [1]">
  <v:fill color2=3D"white [0]"/>
  <v:shadow color=3D"gray [2]"/>
  <v:textbox style=3D'mso-fit-shape-to-text:t'/>
 </v:rect>
 <div v:shape=3D"_x0000_s58371" class=3DO>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:10.0%;left:4.3%;width:76.4%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>Let (x</span><span
 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>1</span><span lang=3DEN-US style=3D'font-=
size:
 156%;mso-fareast-language:ZH-CN'>, y</span><span lang=3DEN-US style=3D'fon=
t-size:
 103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast-language:
 ZH-CN'>1</span><span lang=3DEN-US style=3D'font-size:156%;mso-fareast-lang=
uage:
 ZH-CN'>) and (x</span><span lang=3DEN-US style=3D'font-size:103%;position:=
relative;
 top:.37em;mso-text-raise:-25%;mso-fareast-language:ZH-CN'>2</span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>, y</span=
><span
 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'font-=
size:
 156%;mso-fareast-language:ZH-CN'>) be two points, </span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;</span>&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:16.25%;left:4.3%;width:72.28%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>let D =3D the distance between =
them, </span><span
 lang=3DEL style=3D'font-size:156%;mso-fareast-language:ZH-CN;mso-special-f=
ormat:
 lastCR;display:none'>&#13;</span></div>
 </div>
 <div v:shape=3D"_x0000_s58399" class=3DO style=3D'position:absolute;top:2.=
0%;
 left:27.52%;width:54.11%;height:6.75%'><span lang=3DEN-US style=3D'font-si=
ze:178%;
 color:black;mso-color-index:3;mso-fareast-language:ZH-CN'>The Distance For=
mula</span><span
 lang=3DEN-US style=3D'font-size:178%;mso-fareast-language:ZH-CN'> </span><=
/div>
</p:slide></div>

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o\:* {behavior:url(#default#VML);}
p\:* {behavior:url(#default#VML);}
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v\:textbox {display:none;}
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<title>Rectangular Coordinate System</title>
<![if IE]>
<base
href=3D"file:///C:\EDCB5D0D\1RectangularCoordinateSystem_files\slide0071.ht=
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id=3D"webarch_temp_base_tag">
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<link rel=3DStylesheet href=3D"master06_stylesheet.css">
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<style media=3Dprint>
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	{left:0px !important;
	width:6.0in !important;
	height:4.5in !important;
	font-size:107% !important;}
-->
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<script src=3Dscript.js></script><script><!--
if( !IsNts() ) Redirect( "PPTSld" );
//--></script><!--[if vml]><script>g_vml =3D 1;
</script><![endif]--><![endif]><o:shapelayout v:ext=3D"edit">
 <o:idmap v:ext=3D"edit" data=3D"79"/>
</o:shapelayout>
</head>

<body lang=3DEN-US style=3D'margin:0px;background-color:black'
onclick=3D"DocumentOnClick()" onresize=3D"_RSW()" onload=3D"LoadSld()"
onkeypress=3D"_KPH()">

<div id=3DSlideObj class=3Dsld style=3D'position:absolute;top:0px;left:0px;
width:534px;height:400px;font-size:16px;background-color:white;clip:rect(0%=
, 101%, 101%, 0%);
visibility:hidden'><p:slide coordsize=3D"720,540"
 colors=3D"#ffffff,#000000,#808080,#000000,#bbe0e3,#333399,#009999,#99cc00"
 masterhref=3D"master06.xml">
 <p:shaperange href=3D"master06.xml#_x0000_s46081"/><![if !ppt]><p:shaperan=
ge
  href=3D"master06.xml#_x0000_s46084"/><p:shaperange
  href=3D"master06.xml#_x0000_s46085"/><![endif]><v:shapetype id=3D"_x0000_=
t202"
  coordsize=3D"21600,21600" o:spt=3D"202" path=3D"m,l,21600r21600,l21600,xe=
">
  <v:stroke joinstyle=3D"miter"/>
  <v:path gradientshapeok=3D"t" o:connecttype=3D"rect"/>
 </v:shapetype><v:shape id=3D"_x0000_s80899" type=3D"#_x0000_t202" style=3D=
'position:absolute;
  left:24pt;top:48pt;width:564pt;height:108.125pt;mso-wrap-style:square'
  filled=3D"f" fillcolor=3D"#bbe0e3 [4]" stroked=3D"f" strokecolor=3D"black=
 [1]">
  <v:fill color2=3D"white [0]"/>
  <v:shadow color=3D"gray [2]"/>
  <v:textbox style=3D'mso-fit-shape-to-text:t'/>
 </v:shape><v:rect id=3D"_x0000_s80926" style=3D'position:absolute;left:190=
.375pt;
  top:4.375pt;width:337.625pt;height:45.625pt;mso-wrap-style:none;
  v-text-anchor:top-baseline' filled=3D"f" fillcolor=3D"#bbe0e3 [4]" stroke=
d=3D"f"
  strokecolor=3D"black [1]">
  <v:fill color2=3D"white [0]"/>
  <v:shadow color=3D"gray [2]"/>
  <v:textbox style=3D'mso-fit-shape-to-text:t'/>
 </v:rect>
 <div v:shape=3D"_x0000_s80899" class=3DO>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:10.0%;left:4.3%;width:76.4%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>Let (x</span><span
 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>1</span><span lang=3DEN-US style=3D'font-=
size:
 156%;mso-fareast-language:ZH-CN'>, y</span><span lang=3DEN-US style=3D'fon=
t-size:
 103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast-language:
 ZH-CN'>1</span><span lang=3DEN-US style=3D'font-size:156%;mso-fareast-lang=
uage:
 ZH-CN'>) and (x</span><span lang=3DEN-US style=3D'font-size:103%;position:=
relative;
 top:.37em;mso-text-raise:-25%;mso-fareast-language:ZH-CN'>2</span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>, y</span=
><span
 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'font-=
size:
 156%;mso-fareast-language:ZH-CN'>) be two points, </span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;</span>&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:16.25%;left:4.3%;width:82.58%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>let D =3D the distance between =
them,
 then &#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:22.25%;left:4.3%;width:76.4%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>D</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2 </span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\=
4F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>=3D=
 </span><span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>x</span></span><span style=3D'mso-bidi-font-family:Arial'><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2</span></span><span style=3D'mso-bidi-font-fa=
mily:
 Arial'><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-=
hansi-font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;</span>+ </span></span><span lang=3DEL
 style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-font-famil=
y:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>, <=
/span><span
 lang=3DEL style=3D'font-size:156%;mso-fareast-language:ZH-CN;mso-special-f=
ormat:
 lastCR;display:none'>&#13;</span></div>
 </div>
 <div v:shape=3D"_x0000_s80926" class=3DO style=3D'position:absolute;top:2.=
0%;
 left:27.52%;width:54.11%;height:6.75%'><span lang=3DEN-US style=3D'font-si=
ze:178%;
 color:black;mso-color-index:3;mso-fareast-language:ZH-CN'>The Distance For=
mula</span><span
 lang=3DEN-US style=3D'font-size:178%;mso-fareast-language:ZH-CN'> </span><=
/div>
</p:slide></div>

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<title>Rectangular Coordinate System</title>
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<base
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 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>Let (x</span><span
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 -25%;mso-fareast-language:ZH-CN'>1</span><span lang=3DEN-US style=3D'font-=
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uage:
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relative;
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 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>, y</span=
><span
 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'font-=
size:
 156%;mso-fareast-language:ZH-CN'>) be two points, </span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;</span>&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:16.25%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>let D =3D the distance between =
them,
 then &#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:22.25%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>D</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2 </span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\=
4F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>=3D=
 </span><span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>x</span></span><span style=3D'mso-bidi-font-family:Arial'><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2</span></span><span style=3D'mso-bidi-font-fa=
mily:
 Arial'><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-=
hansi-font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;</span>+ </span></span><span lang=3DEL
 style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-font-famil=
y:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>,
 where&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:28.49%;left:4.3%;width:105.8%;height:6.0%'><span lang=3DEL style=3D'fo=
nt-size:
 156%;mso-fareast-language:ZH-CN'>&#916;</span><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>x =3D difference in the
 x's,<span style=3D'mso-spacerun:yes'>&nbsp; </span></span><span lang=3DEL
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>y =3D dif=
ference in
 the y's</span><span lang=3DEL style=3D'font-size:156%;mso-fareast-language=
:ZH-CN;
 mso-special-format:lastCR;display:none'>&#13;</span></div>
 </div>
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0%;
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ze:178%;
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mula</span><span
 lang=3DEN-US style=3D'font-size:178%;mso-fareast-language:ZH-CN'> </span><=
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 <div v:shape=3D"_x0000_s82946" class=3DO style=3D'mso-char-wrap:0;mso-kins=
oku-overflow:
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t:
 6.75%'><span lang=3DZH-CN style=3D'font-size:178%;mso-ansi-language:EN-US;
 mso-special-format:lastCR;display:none'>&#13;</span></span></div>
 <div v:shape=3D"_x0000_s82947" class=3DO>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:10.0%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>Let (x</span><span
 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>1</span><span lang=3DEN-US style=3D'font-=
size:
 156%;mso-fareast-language:ZH-CN'>, y</span><span lang=3DEN-US style=3D'fon=
t-size:
 103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast-language:
 ZH-CN'>1</span><span lang=3DEN-US style=3D'font-size:156%;mso-fareast-lang=
uage:
 ZH-CN'>) and (x</span><span lang=3DEN-US style=3D'font-size:103%;position:=
relative;
 top:.37em;mso-text-raise:-25%;mso-fareast-language:ZH-CN'>2</span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>, y</span=
><span
 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'font-=
size:
 156%;mso-fareast-language:ZH-CN'>) be two points, </span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;</span>&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:16.25%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>let D =3D the distance between =
them,
 then &#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:22.25%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>D</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2 </span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\=
4F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>=3D=
 </span><span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>x</span></span><span style=3D'mso-bidi-font-family:Arial'><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2</span></span><span style=3D'mso-bidi-font-fa=
mily:
 Arial'><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-=
hansi-font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;</span>+ </span></span><span lang=3DEL
 style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-font-famil=
y:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>,
 where&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:28.49%;left:4.3%;width:105.8%;height:6.0%'><span lang=3DEL style=3D'fo=
nt-size:
 156%;mso-fareast-language:ZH-CN'>&#916;</span><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>x =3D difference in the
 x's,<span style=3D'mso-spacerun:yes'>&nbsp; </span></span><span lang=3DEL
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>y =3D dif=
ference in
 the y's</span><span lang=3DEL style=3D'font-size:156%;mso-fareast-language=
:ZH-CN;
 mso-special-format:lastCR;display:none'>&#13;</span></div>
 </div>
 <div v:shape=3D"_x0000_s82948" class=3DO>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:35.0%;left:4.3%;width:48.12%;height:6.5%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>Hence D =3D </span><span lang=
=3DEN-US
 style=3D'font-family:Symbol;mso-fareast-font-family:\5B8B\4F53;mso-hansi-f=
ont-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN;mso-char-type:symbol'>&Oum=
l;</span><span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>x</span></span><span style=3D'mso-bidi-font-family:Arial'><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2 </span></span><span style=3D'mso-bidi-font-f=
amily:
 Arial'><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-=
hansi-font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>+</span></span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:103%;position:relative;
 top:-.45em;mso-text-raise:30%;mso-fareast-language:ZH-CN'> </span></span><=
span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'><sp=
an
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </span>&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:41.75%;left:4.3%;width:48.12%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </span>or&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:47.5%;left:4.3%;width:50.74%;height:6.5%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>D =3D </span><span lang=3DEN-US
 style=3D'font-family:Symbol;mso-fareast-font-family:\5B8B\4F53;mso-hansi-f=
ont-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN;mso-char-type:symbol'>&Oum=
l;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>(x</span><span lang=3DEN-=
US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'><sp=
an
 style=3D'mso-spacerun:yes'>&nbsp;</span>&#8211; x</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast=
-language:
 ZH-CN'>1</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>)</=
span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareas=
t-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>+(y</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B=
\4F53;
 mso-hansi-font-family:Arial;font-size:103%;position:relative;top:.37em;
 mso-text-raise:-25%;mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;</span>&#8211; y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
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-language:
 ZH-CN'>1</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
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span><span
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mily:
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t-font-family:
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 ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </span></span></div>
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t:
 6.75%'><span lang=3DZH-CN style=3D'font-size:178%;mso-ansi-language:EN-US;
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 <div v:shape=3D"_x0000_s83971" class=3DO>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:10.0%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
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 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>1</span><span lang=3DEN-US style=3D'font-=
size:
 156%;mso-fareast-language:ZH-CN'>, y</span><span lang=3DEN-US style=3D'fon=
t-size:
 103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast-language:
 ZH-CN'>1</span><span lang=3DEN-US style=3D'font-size:156%;mso-fareast-lang=
uage:
 ZH-CN'>) and (x</span><span lang=3DEN-US style=3D'font-size:103%;position:=
relative;
 top:.37em;mso-text-raise:-25%;mso-fareast-language:ZH-CN'>2</span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>, y</span=
><span
 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'font-=
size:
 156%;mso-fareast-language:ZH-CN'>) be two points, </span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;</span>&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:16.25%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>let D =3D the distance between =
them,
 then &#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:22.25%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>D</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2 </span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\=
4F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>=3D=
 </span><span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>x</span></span><span style=3D'mso-bidi-font-family:Arial'><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2</span></span><span style=3D'mso-bidi-font-fa=
mily:
 Arial'><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-=
hansi-font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;</span>+ </span></span><span lang=3DEL
 style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-font-famil=
y:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>,
 where&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:28.49%;left:4.3%;width:105.8%;height:6.0%'><span lang=3DEL style=3D'fo=
nt-size:
 156%;mso-fareast-language:ZH-CN'>&#916;</span><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>x =3D difference in the
 x's,<span style=3D'mso-spacerun:yes'>&nbsp; </span></span><span lang=3DEL
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>y =3D dif=
ference in
 the y's</span><span lang=3DEL style=3D'font-size:156%;mso-fareast-language=
:ZH-CN;
 mso-special-format:lastCR;display:none'>&#13;</span></div>
 </div>
 <div v:shape=3D"_x0000_s83972" class=3DO>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:35.0%;left:4.3%;width:48.12%;height:6.5%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>Hence D =3D </span><span lang=
=3DEN-US
 style=3D'font-family:Symbol;mso-fareast-font-family:\5B8B\4F53;mso-hansi-f=
ont-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN;mso-char-type:symbol'>&Oum=
l;</span><span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>x</span></span><span style=3D'mso-bidi-font-family:Arial'><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2 </span></span><span style=3D'mso-bidi-font-f=
amily:
 Arial'><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-=
hansi-font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>+</span></span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:103%;position:relative;
 top:-.45em;mso-text-raise:30%;mso-fareast-language:ZH-CN'> </span></span><=
span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'><sp=
an
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </span>&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:41.75%;left:4.3%;width:48.12%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </span>or&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:47.5%;left:4.3%;width:50.74%;height:6.5%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>D =3D </span><span lang=3DEN-US
 style=3D'font-family:Symbol;mso-fareast-font-family:\5B8B\4F53;mso-hansi-f=
ont-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN;mso-char-type:symbol'>&Oum=
l;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>(x</span><span lang=3DEN-=
US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'><sp=
an
 style=3D'mso-spacerun:yes'>&nbsp;</span>&#8211; x</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast=
-language:
 ZH-CN'>1</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>)</=
span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareas=
t-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>+(y</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B=
\4F53;
 mso-hansi-font-family:Arial;font-size:103%;position:relative;top:.37em;
 mso-text-raise:-25%;mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;</span>&#8211; y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast=
-language:
 ZH-CN'>1</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>)</=
span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareas=
t-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </span></span></div>
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 </v:rect><![if !vml]><img border=3D0 v:shapes=3D"_x0000_s83974"
 src=3D"slide0074_image034.gif" style=3D'position:absolute;top:47.75%;left:=
14.04%;
 width:33.7%;height:.5%'><![endif]>
 <div v:shape=3D"_x0000_s83975" class=3DO>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:57.25%;left:4.3%;width:61.04%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;color:green;mso-fareast-language:ZH-CN'>Example A: Find the
 distance&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:63.24%;left:4.3%;width:55.8%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;color:green;mso-fareast-language:ZH-CN'>between (-1, 3) and=
 (2,
 -4).</span></div>
 </div>
 <div v:shape=3D"_x0000_s83998" class=3DO style=3D'position:absolute;top:2.=
0%;
 left:27.52%;width:54.11%;height:6.75%'><span lang=3DEN-US style=3D'font-si=
ze:178%;
 color:black;mso-color-index:3;mso-fareast-language:ZH-CN'>The Distance For=
mula</span><span
 lang=3DEN-US style=3D'font-size:178%;mso-fareast-language:ZH-CN'> </span><=
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oku-overflow:
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t:
 6.75%'><span lang=3DZH-CN style=3D'font-size:178%;mso-ansi-language:EN-US;
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 <div v:shape=3D"_x0000_s84995" class=3DO>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:10.0%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>Let (x</span><span
 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>1</span><span lang=3DEN-US style=3D'font-=
size:
 156%;mso-fareast-language:ZH-CN'>, y</span><span lang=3DEN-US style=3D'fon=
t-size:
 103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast-language:
 ZH-CN'>1</span><span lang=3DEN-US style=3D'font-size:156%;mso-fareast-lang=
uage:
 ZH-CN'>) and (x</span><span lang=3DEN-US style=3D'font-size:103%;position:=
relative;
 top:.37em;mso-text-raise:-25%;mso-fareast-language:ZH-CN'>2</span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>, y</span=
><span
 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'font-=
size:
 156%;mso-fareast-language:ZH-CN'>) be two points, </span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;</span>&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:16.25%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>let D =3D the distance between =
them,
 then &#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:22.25%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>D</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2 </span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\=
4F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>=3D=
 </span><span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>x</span></span><span style=3D'mso-bidi-font-family:Arial'><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2</span></span><span style=3D'mso-bidi-font-fa=
mily:
 Arial'><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-=
hansi-font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;</span>+ </span></span><span lang=3DEL
 style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-font-famil=
y:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>,
 where&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:28.49%;left:4.3%;width:105.8%;height:6.0%'><span lang=3DEL style=3D'fo=
nt-size:
 156%;mso-fareast-language:ZH-CN'>&#916;</span><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>x =3D difference in the
 x's,<span style=3D'mso-spacerun:yes'>&nbsp; </span></span><span lang=3DEL
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>y =3D dif=
ference in
 the y's</span><span lang=3DEL style=3D'font-size:156%;mso-fareast-language=
:ZH-CN;
 mso-special-format:lastCR;display:none'>&#13;</span></div>
 </div>
 <div v:shape=3D"_x0000_s84996" class=3DO>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:35.0%;left:4.3%;width:48.12%;height:6.5%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>Hence D =3D </span><span lang=
=3DEN-US
 style=3D'font-family:Symbol;mso-fareast-font-family:\5B8B\4F53;mso-hansi-f=
ont-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN;mso-char-type:symbol'>&Oum=
l;</span><span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>x</span></span><span style=3D'mso-bidi-font-family:Arial'><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2 </span></span><span style=3D'mso-bidi-font-f=
amily:
 Arial'><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-=
hansi-font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>+</span></span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:103%;position:relative;
 top:-.45em;mso-text-raise:30%;mso-fareast-language:ZH-CN'> </span></span><=
span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'><sp=
an
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </span>&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:41.75%;left:4.3%;width:48.12%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </span>or&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:47.5%;left:4.3%;width:50.74%;height:6.5%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>D =3D </span><span lang=3DEN-US
 style=3D'font-family:Symbol;mso-fareast-font-family:\5B8B\4F53;mso-hansi-f=
ont-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN;mso-char-type:symbol'>&Oum=
l;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>(x</span><span lang=3DEN-=
US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'><sp=
an
 style=3D'mso-spacerun:yes'>&nbsp;</span>&#8211; x</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast=
-language:
 ZH-CN'>1</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>)</=
span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareas=
t-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>+(y</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B=
\4F53;
 mso-hansi-font-family:Arial;font-size:103%;position:relative;top:.37em;
 mso-text-raise:-25%;mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;</span>&#8211; y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast=
-language:
 ZH-CN'>1</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>)</=
span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareas=
t-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </span></span></div>
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pt" to=3D"318pt,192pt"
  strokecolor=3D"black [1]">
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  <v:textbox style=3D'mso-fit-shape-to-text:t'/>
 </v:shape><![if !vml]><img border=3D0 v:shapes=3D"_x0000_s84998"
 src=3D"slide0075_image036.gif" style=3D'position:absolute;top:47.75%;left:=
14.04%;
 width:33.7%;height:.5%'><![endif]>
 <div v:shape=3D"_x0000_s84999" class=3DO>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:57.25%;left:4.3%;width:61.04%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;color:green;mso-fareast-language:ZH-CN'>Example A: Find the
 distance&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:63.24%;left:4.3%;width:55.8%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;color:green;mso-fareast-language:ZH-CN'>between (-1, 3) and=
 (2,
 -4).</span></div>
 </div>
 <div v:shape=3D"_x0000_s85000" class=3DO>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:71.25%;left:5.24%;width:23.22%;height:6.0%'><span lang=3DZH-CN
 style=3D'font-size:156%;color:green;mso-ansi-language:EN-US'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span>(-1,<span
 style=3D'mso-spacerun:yes'>&nbsp; </span>3)&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:77.5%;left:5.24%;width:23.22%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;color:red;mso-fareast-language:ZH-CN'>&#8211;</spa=
n><span
 lang=3DEN-US style=3D'font-size:156%;color:green;mso-fareast-language:ZH-C=
N'><span
 style=3D'mso-spacerun:yes'>&nbsp; </span>( 2, -4) &#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:83.75%;left:5.24%;width:23.22%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;color:green;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span></span></div>
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375pt;
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4.86%;
 width:18.16%;height:.75%'><![endif]>
 <div v:shape=3D"_x0000_s85022" class=3DO style=3D'position:absolute;top:2.=
0%;
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ze:178%;
 color:black;mso-color-index:3;mso-fareast-language:ZH-CN'>The Distance For=
mula</span><span
 lang=3DEN-US style=3D'font-size:178%;mso-fareast-language:ZH-CN'> </span><=
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t:
 6.75%'><span lang=3DZH-CN style=3D'font-size:178%;mso-ansi-language:EN-US;
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 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:10.0%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>Let (x</span><span
 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>1</span><span lang=3DEN-US style=3D'font-=
size:
 156%;mso-fareast-language:ZH-CN'>, y</span><span lang=3DEN-US style=3D'fon=
t-size:
 103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast-language:
 ZH-CN'>1</span><span lang=3DEN-US style=3D'font-size:156%;mso-fareast-lang=
uage:
 ZH-CN'>) and (x</span><span lang=3DEN-US style=3D'font-size:103%;position:=
relative;
 top:.37em;mso-text-raise:-25%;mso-fareast-language:ZH-CN'>2</span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>, y</span=
><span
 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'font-=
size:
 156%;mso-fareast-language:ZH-CN'>) be two points, </span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;</span>&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:16.25%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>let D =3D the distance between =
them,
 then &#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:22.25%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>D</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2 </span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\=
4F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>=3D=
 </span><span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>x</span></span><span style=3D'mso-bidi-font-family:Arial'><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2</span></span><span style=3D'mso-bidi-font-fa=
mily:
 Arial'><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-=
hansi-font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;</span>+ </span></span><span lang=3DEL
 style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-font-famil=
y:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
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 <div v:shape=3D"_x0000_s86018" class=3DO style=3D'mso-char-wrap:0;mso-kins=
oku-overflow:
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t:
 6.75%'><span lang=3DZH-CN style=3D'font-size:178%;mso-ansi-language:EN-US;
 mso-special-format:lastCR;display:none'>&#13;</span></span></div>
 <div v:shape=3D"_x0000_s86019" class=3DO>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:10.0%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>Let (x</span><span
 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>1</span><span lang=3DEN-US style=3D'font-=
size:
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t-size:
 103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast-language:
 ZH-CN'>1</span><span lang=3DEN-US style=3D'font-size:156%;mso-fareast-lang=
uage:
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relative;
 top:.37em;mso-text-raise:-25%;mso-fareast-language:ZH-CN'>2</span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>, y</span=
><span
 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'font-=
size:
 156%;mso-fareast-language:ZH-CN'>) be two points, </span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;</span>&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:16.25%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>let D =3D the distance between =
them,
 then &#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:22.25%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>D</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2 </span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\=
4F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>=3D=
 </span><span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>x</span></span><span style=3D'mso-bidi-font-family:Arial'><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2</span></span><span style=3D'mso-bidi-font-fa=
mily:
 Arial'><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-=
hansi-font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;</span>+ </span></span><span lang=3DEL
 style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-font-famil=
y:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>,
 where&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:28.49%;left:4.3%;width:105.8%;height:6.0%'><span lang=3DEL style=3D'fo=
nt-size:
 156%;mso-fareast-language:ZH-CN'>&#916;</span><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>x =3D difference in the
 x's,<span style=3D'mso-spacerun:yes'>&nbsp; </span></span><span lang=3DEL
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>y =3D dif=
ference in
 the y's</span><span lang=3DEL style=3D'font-size:156%;mso-fareast-language=
:ZH-CN;
 mso-special-format:lastCR;display:none'>&#13;</span></div>
 </div>
 <div v:shape=3D"_x0000_s86020" class=3DO>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:35.0%;left:4.3%;width:48.12%;height:6.5%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>Hence D =3D </span><span lang=
=3DEN-US
 style=3D'font-family:Symbol;mso-fareast-font-family:\5B8B\4F53;mso-hansi-f=
ont-family:
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l;</span><span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
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 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>x</span></span><span style=3D'mso-bidi-font-family:Arial'><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2 </span></span><span style=3D'mso-bidi-font-f=
amily:
 Arial'><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-=
hansi-font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>+</span></span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:103%;position:relative;
 top:-.45em;mso-text-raise:30%;mso-fareast-language:ZH-CN'> </span></span><=
span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
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an
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </span>&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:41.75%;left:4.3%;width:48.12%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </span>or&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:47.5%;left:4.3%;width:50.74%;height:6.5%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>D =3D </span><span lang=3DEN-US
 style=3D'font-family:Symbol;mso-fareast-font-family:\5B8B\4F53;mso-hansi-f=
ont-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN;mso-char-type:symbol'>&Oum=
l;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>(x</span><span lang=3DEN-=
US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
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an
 style=3D'mso-spacerun:yes'>&nbsp;</span>&#8211; x</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast=
-language:
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F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>)</=
span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
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 mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareas=
t-font-family:
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 ZH-CN'>+(y</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B=
\4F53;
 mso-hansi-font-family:Arial;font-size:103%;position:relative;top:.37em;
 mso-text-raise:-25%;mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;</span>&#8211; y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:.37em;mso-text-raise:-25%;mso-fareast=
-language:
 ZH-CN'>1</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>)</=
span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareas=
t-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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 src=3D"slide0076_image044.gif" style=3D'position:absolute;top:47.75%;left:=
14.04%;
 width:33.7%;height:.5%'><![endif]>
 <div v:shape=3D"_x0000_s86023" class=3DO>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:57.25%;left:4.3%;width:61.04%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;color:green;mso-fareast-language:ZH-CN'>Example A: Find the
 distance&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:63.24%;left:4.3%;width:55.8%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;color:green;mso-fareast-language:ZH-CN'>between (-1, 3) and=
 (2,
 -4).</span></div>
 </div>
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 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:71.25%;left:5.24%;width:23.22%;height:6.0%'><span lang=3DZH-CN
 style=3D'font-size:156%;color:green;mso-ansi-language:EN-US'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span>(-1,<span
 style=3D'mso-spacerun:yes'>&nbsp; </span>3)&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:77.5%;left:5.24%;width:23.22%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;color:red;mso-fareast-language:ZH-CN'>&#8211;</spa=
n><span
 lang=3DEN-US style=3D'font-size:156%;color:green;mso-fareast-language:ZH-C=
N'><span
 style=3D'mso-spacerun:yes'>&nbsp; </span>( 2, -4) &#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:83.75%;left:5.24%;width:23.22%;height:6.0%'><span lang=3DEN-US
 style=3D'font-size:156%;color:green;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span>-3,<span
 style=3D'mso-spacerun:yes'>&nbsp; </span>7&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:89.75%;left:5.24%;width:23.22%;height:2.25%'><span lang=3DEN-US
 style=3D'font-size:56%;color:green;mso-fareast-language:ZH-CN;display:none=
'>&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:92.0%;left:5.24%;width:23.22%;height:6.0%'><span lang=3DEL style=3D'fo=
nt-family:
 Arial;mso-bidi-font-family:Arial;mso-hansi-font-family:Arial;font-size:156=
%;
 color:green;mso-fareast-language:ZH-CN'>&#916;</span><span lang=3DEN-US
 style=3D'mso-bidi-font-family:Arial;mso-hansi-font-family:Arial;font-size:=
156%;
 color:green;mso-fareast-language:ZH-CN'>x<span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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ily:
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anguage:
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 mso-hansi-font-family:Arial;font-size:156%;color:green;mso-fareast-languag=
e:
 ZH-CN'>y</span><span lang=3DEN-US style=3D'font-size:156%;color:green;mso-=
fareast-language:
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0%;
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ze:178%;
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mula</span><span
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 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
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t-size:
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uage:
 ZH-CN'>) and (x</span><span lang=3DEN-US style=3D'font-size:103%;position:=
relative;
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 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>, y</span=
><span
 lang=3DEN-US style=3D'font-size:103%;position:relative;top:.37em;mso-text-=
raise:
 -25%;mso-fareast-language:ZH-CN'>2</span><span lang=3DEN-US style=3D'font-=
size:
 156%;mso-fareast-language:ZH-CN'>) be two points, </span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;</span>&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:16.25%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>let D =3D the distance between =
them,
 then &#13;</span></div>
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 top:22.25%;left:4.3%;width:94.0%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>D</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2 </span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\=
4F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>=3D=
 </span><span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>x</span></span><span style=3D'mso-bidi-font-family:Arial'><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2</span></span><span style=3D'mso-bidi-font-fa=
mily:
 Arial'><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-=
hansi-font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;</span>+ </span></span><span lang=3DEL
 style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-font-famil=
y:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'>,
 where&#13;</span></div>
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 top:28.49%;left:4.3%;width:105.8%;height:6.0%'><span lang=3DEL style=3D'fo=
nt-size:
 156%;mso-fareast-language:ZH-CN'>&#916;</span><span lang=3DEN-US
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>x =3D difference in the
 x's,<span style=3D'mso-spacerun:yes'>&nbsp; </span></span><span lang=3DEL
 style=3D'font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'font-size:156%;mso-fareast-language:ZH-CN'>y =3D dif=
ference in
 the y's</span><span lang=3DEL style=3D'font-size:156%;mso-fareast-language=
:ZH-CN;
 mso-special-format:lastCR;display:none'>&#13;</span></div>
 </div>
 <div v:shape=3D"_x0000_s87044" class=3DO>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:35.0%;left:4.3%;width:48.12%;height:6.5%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'>Hence D =3D </span><span lang=
=3DEN-US
 style=3D'font-family:Symbol;mso-fareast-font-family:\5B8B\4F53;mso-hansi-f=
ont-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN;mso-char-type:symbol'>&Oum=
l;</span><span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:
 ZH-CN'>x</span></span><span style=3D'mso-bidi-font-family:Arial'><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;
 mso-fareast-language:ZH-CN'>2 </span></span><span style=3D'mso-bidi-font-f=
amily:
 Arial'><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-=
hansi-font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>+</span></span><span
 style=3D'mso-bidi-font-family:Arial'><span lang=3DEN-US style=3D'mso-farea=
st-font-family:
 \5B8B\4F53;mso-hansi-font-family:Arial;font-size:103%;position:relative;
 top:-.45em;mso-text-raise:30%;mso-fareast-language:ZH-CN'> </span></span><=
span
 lang=3DEL style=3D'font-family:Arial;mso-bidi-font-family:Arial;mso-hansi-=
font-family:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>&#916;</span><span
 lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-fa=
mily:
 Arial;font-size:156%;mso-fareast-language:ZH-CN'>y</span><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:103%;position:relative;top:-.45em;mso-text-raise:30%;mso-fareast=
-language:
 ZH-CN'>2</span><span lang=3DEN-US style=3D'mso-fareast-font-family:\5B8B\4=
F53;
 mso-hansi-font-family:Arial;font-size:156%;mso-fareast-language:ZH-CN'><sp=
an
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </span>&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:41.75%;left:4.3%;width:48.12%;height:6.0%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
 font-size:156%;mso-fareast-language:ZH-CN'><span
 style=3D'mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 </span>or&#13;</span></div>
 <div style=3D'mso-char-wrap:0;mso-kinsoku-overflow:0;position:absolute;
 top:47.5%;left:4.3%;width:50.74%;height:6.5%'><span lang=3DEN-US
 style=3D'mso-fareast-font-family:\5B8B\4F53;mso-hansi-font-family:Arial;
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n><span
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N'><span
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0%;
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<title>Rectangular Coordinate System</title>
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r of a
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 </v:rect><![if !vml]><img border=3D0
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 width:28.46%;height:36.5%'><![endif]>
 <div v:shape=3D"_x0000_s91138" class=3DCB style=3D'text-align:left'><span
 style=3D'position:absolute;top:8.75%;left:5.24%;width:110.11%;height:6.0%'=
><span
 lang=3DEN-US style=3D'font-size:88%;mso-fareast-language:ZH-CN'>Let (h, k)=
 be the
 center of a circle and r be the radius.<span style=3D'mso-spacerun:yes'>&n=
bsp;
 </span></span></span><span style=3D'position:absolute;top:15.0%;left:5.24%;
 width:96.25%;height:6.0%'><span lang=3DEN-US style=3D'font-size:88%;mso-fa=
reast-language:
 ZH-CN'>Suppose (x, y) is a point on the circle, then the </span></
