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<b>reconsider </b><font color="Maroon">g</font> = <font color="Maroon">f</font> as  <a href="funct_1.html#V2" target="_self">one-to-one</a> <a href="funct_1.html#NM1">Function</a> <b>by </b><i/>;<br/>
<a NAME="E2:47_1_1"/>
<font color="Maroon">g</font> <a href="relat_1.html#K4">~</a>  is   <a href="funct_1.html#NM1">Function</a>
 
;<br/>
<b>hence </b><a NAME="E3:47_1_1"/>
<font color="Maroon">f</font> <a href="relat_1.html#K4">~</a>  is   <a href="funct_1.html#NM1">Function</a>
 ;<br/>


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