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<b>let </b><font color="Maroon">c<sub>1</sub></font>, <font color="Maroon">c<sub>2</sub></font> be   <a href="nat_1.html#NM1">Nat</a>;<br/><b>let </b><font color="Maroon">c<sub>3</sub></font> be    <a href="subset_1.html#M1">Element</a> of  <a href="numbers.html#K1">REAL</a> ;<br/>





<b>thus </b> <a href="rvsum_1.html#K16" target="_self">Product</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="binop_2.html#K23">+</a> <font color="Maroon">c<sub>2</sub></font></span>)</span> <a href="finseqop.html#K4">|-&gt;</a> <font color="Maroon">c<sub>3</sub></font></span>)</span> = 
<a href="binop_2.html#K35">multreal</a>  <a href="finsop_1.html#K2">$$</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="binop_2.html#K23">+</a> <font color="Maroon">c<sub>2</sub></font></span>)</span> <a href="finseqop.html#K4">|-&gt;</a> <font color="Maroon">c<sub>3</sub></font></span>)</span>
<b>by </b><i><a class="ref" href="rvsum_1.html#T123" target="_self">Th123</a></i>
<br/>.= 
<a href="binop_2.html#K35">multreal</a>  <a href="binop_1.html#K2">.</a> <span class="p1">(<span class="default"><a href="binop_2.html#K35">multreal</a>  <a href="finsop_1.html#K2">$$</a> <span class="p2">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="finseqop.html#K4">|-&gt;</a> <font color="Maroon">c<sub>3</sub></font></span>)</span></span>)</span>,<span class="p1">(<span class="default"><a href="binop_2.html#K35">multreal</a>  <a href="finsop_1.html#K2">$$</a> <span class="p2">(<span class="default"><font color="Maroon">c<sub>2</sub></font> <a href="finseqop.html#K4">|-&gt;</a> <font color="Maroon">c<sub>3</sub></font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="setwop_2.html#T37">SETWOP_2:37</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="binop_2.html#K35">multreal</a>  <a href="finsop_1.html#K2">$$</a> <span class="p2">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="finseqop.html#K4">|-&gt;</a> <font color="Maroon">c<sub>3</sub></font></span>)</span></span>)</span> <a href="binop_2.html#K11">*</a> <span class="p1">(<span class="default"><a href="binop_2.html#K35">multreal</a>  <a href="finsop_1.html#K2">$$</a> <span class="p2">(<span class="default"><font color="Maroon">c<sub>2</sub></font> <a href="finseqop.html#K4">|-&gt;</a> <font color="Maroon">c<sub>3</sub></font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="binop_2.html#D11">BINOP_2:def 11</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="binop_2.html#K35">multreal</a>  <a href="finsop_1.html#K2">$$</a> <span class="p2">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="finseqop.html#K4">|-&gt;</a> <font color="Maroon">c<sub>3</sub></font></span>)</span></span>)</span> <a href="xcmplx_0.html#K3">*</a> <span class="p1">(<span class="default"><a href="rvsum_1.html#K16" target="_self">Product</a> <span class="p2">(<span class="default"><font color="Maroon">c<sub>2</sub></font> <a href="finseqop.html#K4">|-&gt;</a> <font color="Maroon">c<sub>3</sub></font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="rvsum_1.html#T123" target="_self">Th123</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="rvsum_1.html#K16" target="_self">Product</a> <span class="p2">(<span class="default"><font color="Maroon">c<sub>1</sub></font> <a href="finseqop.html#K4">|-&gt;</a> <font color="Maroon">c<sub>3</sub></font></span>)</span></span>)</span> <a href="xcmplx_0.html#K3">*</a> <span class="p1">(<span class="default"><a href="rvsum_1.html#K16" target="_self">Product</a> <span class="p2">(<span class="default"><font color="Maroon">c<sub>2</sub></font> <a href="finseqop.html#K4">|-&gt;</a> <font color="Maroon">c<sub>3</sub></font></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="rvsum_1.html#T123" target="_self">Th123</a></i>
;<br/>


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