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<a NAME="E1:1_1_1"/>
( <font color="Maroon">r</font> <a href="xxreal_0.html#R1">&lt;=</a> 0 or 0 <a href="xxreal_0.html#R1">&lt;=</a> <font color="Maroon">r</font> )
 
;<br/>
<b>hence </b><a NAME="E2:1_1_1"/>
not <font color="Maroon">r</font> <a href="xcmplx_0.html#K7">/</a> <font color="Maroon">r</font> is <a href="xxreal_0.html#V3">negative</a>
 <b>by </b><i><a class="ref" href="real_2.html#T125">REAL_2:125</a></i>;<br/>


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