Derivatives · Review Exercise 89

Use numerical evidence to determine whether the limit exists at $x=a.$ If not, describe the behavior of the graph of the function at $x=a.$

$f\left(x\right)=\frac{-2}{{\left(x-4\right)}^2};a=4$

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Precalculus 2e · §12.4 Derivatives · Review Exercise 89