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<b>consider </b><font color="Maroon">c<sub>1</sub></font> being  <a href="relat_1.html#V2">non-empty</a> <a href="funct_2.html#NM1">Function</a> of 0, <a href="numbers.html#K1">REAL</a> ;<br/>
<b>take </b>
<font color="Maroon">c<sub>1</sub></font>
;<br/>

<b>thus </b><a NAME="E2:15_1_1"/>
( <font color="Maroon">c<sub>1</sub></font> is <a href="relat_1.html#V2">non-empty</a> &amp; <font color="Maroon">c<sub>1</sub></font> is <a href="seq_1.html#V1">real-yielding</a> )
 ;<br/>


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