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<b>take </b>
 <a href="xxreal_0.html#K1" title="XXREAL_0:func.1">+infty</a> 
;<br/>

<b>thus </b><a NAME="E1:28_1_1"/>
 <a href="xxreal_0.html#K1" title="XXREAL_0:func.1">+infty</a>  is <a href="xxreal_0.html#V2" title="XXREAL_0:attr.2">positive</a>
 ;<br/>


</div>
