Consider the following function and graph.

$f(x)=5|\frac{x}{x^2-75}|$

Determine whether $f(x)$ approaches $$ or $-$ as $x$ approaches $5$ from the left and from the right.

$($a$)\underset{x{5}^{-}}{lim}f(x)$

$($b$)\underset{x{5}^{+}}{lim}f(x)$