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<b>let </b><font color="Maroon">s</font> be   <a href="nat_1.html#NM1">Nat</a>;<br/><b>let </b><font color="Maroon">t</font> be   <a href="nat_1.html#NM1">Nat</a>;<br/>



<b>assume </b><a NAME="E1:37"/><i><font color="Green">E41</font></i>: 
( <font color="Maroon">s</font> <a href="xxreal_0.html#NR2" target="_self">&gt;=</a> 1 &amp; <font color="Maroon">t</font> <a href="hidden.html#R1">=</a> <font color="Maroon">s</font> <a href="xcmplx_0.html#K6">-</a> 1 )
 ;<br/>

<a NAME="E2:37"/><b>then </b>
<font color="Maroon">s</font> <a href="newton.html#K8" target="_self">choose</a> <font color="Maroon">t</font> <a href="hidden.html#R1">=</a> <font color="Maroon">s</font> <a href="newton.html#K8" target="_self">choose</a> 1
 
<b>by </b><i/>;<br/>
<b>hence </b><a NAME="E3:37"/>
<font color="Maroon">s</font> <a href="newton.html#K8" target="_self">choose</a> <font color="Maroon">t</font> <a href="hidden.html#R1">=</a> <font color="Maroon">s</font>
 <b>by </b><i>, </i>;<br/>


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