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<b>let </b><font color="Maroon">c<sub>1</sub></font> be   <a href="rlvect_1.html#NM2">RealLinearSpace</a>;<br/><b>let </b><font color="Maroon">c<sub>2</sub></font>, <font color="Maroon">c<sub>3</sub></font> be   <a href="rlvect_1.html#NM1">VECTOR</a> of <font color="Maroon">c<sub>1</sub></font>;<br/>





<b>set </b><font color="Maroon">c<sub>4</sub></font> = <font color="Maroon">c<sub>2</sub></font> <a href="geomtrap.html#K1" target="_self">#</a> <font color="Maroon">c<sub>3</sub></font>;<br/>
2 <a href="rlvect_1.html#K3">*</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">c<sub>2</sub></font> <a href="geomtrap.html#K1" target="_self">#</a> <font color="Maroon">c<sub>3</sub></font></span>)</span> <a href="rlvect_1.html#K6">-</a> <font color="Maroon">c<sub>2</sub></font></span>)</span> = 
<font color="Maroon">c<sub>3</sub></font> <a href="rlvect_1.html#K6">-</a> <font color="Maroon">c<sub>2</sub></font>
<b>by </b><i><a class="ref" href="geomtrap.html#T12" target="_self">Th12</a></i>
<br/>.= 
2 <a href="rlvect_1.html#K3">*</a> <span class="p1">(<span class="default"><font color="Maroon">c<sub>3</sub></font> <a href="rlvect_1.html#K6">-</a> <span class="p2">(<span class="default"><font color="Maroon">c<sub>2</sub></font> <a href="geomtrap.html#K1" target="_self">#</a> <font color="Maroon">c<sub>3</sub></font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="geomtrap.html#T12" target="_self">Th12</a></i>
;<br/>
<b>hence </b><a NAME="E2:13"/>
<font color="Maroon">c<sub>2</sub></font>,<font color="Maroon">c<sub>2</sub></font> <a href="geomtrap.html#K1" target="_self">#</a> <font color="Maroon">c<sub>3</sub></font> <a href="analoaf.html#R1">//</a> <font color="Maroon">c<sub>2</sub></font> <a href="geomtrap.html#K1" target="_self">#</a> <font color="Maroon">c<sub>3</sub></font>,<font color="Maroon">c<sub>3</sub></font>
 <b>by </b><i><a class="ref" href="analoaf.html#D1">ANALOAF:def 1</a></i>;<br/>


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