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<a NAME="E1:2_1_1"/>
<font color="Maroon">f</font> <a href="funct_2.html#K3">.</a> <span class="p1"><a href="domain_1.html#K4">[</a><span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Maroon">c</font></span><a href="domain_1.html#K4">]</a></span> is    <a href="subset_1.html#M1">Element</a> of <font color="Maroon">D</font>
 
;<br/>
<b>hence </b><a NAME="E2:2_1_1"/>
<font color="Maroon">f</font> <a href="multop_1.html#K1" target="_self">.</a> <font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Maroon">c</font> is    <a href="subset_1.html#M1">Element</a> of <font color="Maroon">D</font>
 ;<br/>


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