# What are the absolute extrema of f(x)=(6x) / (4x+8) in[-oo,oo]?

${\lim}_{x \rightarrow - {2}^{-}} f \left(x\right) = \infty$ and ${\lim}_{x \rightarrow - {2}^{+}} f \left(x\right) = - \infty$.