Answer
$\\f'(x)=0$
Work Step by Step
$\\f(x)=7$
$\\f'(x)=\lim\limits_{h \to 0}\frac{7-7}{h}$
$\\f'(x)=\lim\limits_{h \to 0}\frac{0}{h}$
$\\f'(x)=0$
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