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If \( f(x) = x+7\: and \: g(x) = x-7, x \in R, \: find \: (fog) \: (7) \)

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  • $(fog)(x)=f(g(x))$
$f(x)=x+7$
$g(x)=x-7$
$fog=(x-7)+7$
$\quad\;\;=7$
$fog(7)=7$
answered Sep 26, 2013 by sreemathi.v
 
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