Given $f(x)=1/(x-4)$ , what is $f(1/2)$ ?

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Answer 1 · 2016-11-17T10:27:54

$f(1/2) = -2/7$

To solve this substitute $1/2$ in every place there is an $x$ and solve:

$f(1/2) = 1/(1/2 - 4)$

$f(1/2) = 1/(1/2 - (4/1)(2/2))$

$f(1/2) = 1/(1/2 - 8/2)$

$f(1/2) = 1/(-7/2)$

$f(1/2) = (1/1)/(-7/2)$

$f(1/2) = (-2*1)/(1*7)$

$f(1/2) = -2/7$

Given f(x)=1/(x-4)f(x)=1/(x-4), what is f(1/2)f(1/2)?