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2 <a href="newton.html#K6" target="_self">!</a>  = 
 <a href="rvsum_1.html#K16">Product</a> <span class="p1"><a href="finseq_4.html#K2">&lt;*</a><span class="default">1,2</span><a href="finseq_4.html#K2">*&gt;</a></span>
<b>by </b><i><a class="ref" href="finseq_2.html#T61">FINSEQ_2:61</a></i>
<br/>.= 
1 <a href="nat_1.html#K2">*</a> 2
<b>by </b><i><a class="ref" href="rvsum_1.html#T129">RVSUM_1:129</a></i>
;<br/>
<b>hence </b><a NAME="E2:23"/>
2 <a href="newton.html#K6" target="_self">!</a>  <a href="hidden.html#R1">=</a> 2
 ;<br/>


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