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<a href="sin_cos.html#K27" target="_self">exp_R</a>  <a href="seq_1.html#K2">.</a> 0 = 
 <a href="series_1.html#K2">Sum</a> <span class="p1">(<span class="default">0 <a href="sin_cos.html#K7" target="_self">ExpSeq</a> </span>)</span>
<b>by </b><i><a class="ref" href="sin_cos.html#D26" target="_self">Def26</a></i>
<br/>.= 
1
<b>by </b><i><a class="txt" href="sin_cos.html#E62"><i><font color="Green">Lemma46</font></i></a>, <a class="ref" href="sin_cos.html#T10" target="_self">Th10</a>, <a class="ref" href="sin_cos.html#T49" target="_self">Th49</a>, <a class="ref" href="complex1.html#T15">COMPLEX1:15</a></i>
;<br/>
<b>hence </b><a NAME="E2:97"/>
<a href="sin_cos.html#K27" target="_self">exp_R</a>  <a href="seq_1.html#K2">.</a> 0 <a href="hidden.html#R1">=</a> 1
 ;<br/>


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