Answer
$f'"(x)$ is undefined at the inflection point.
Graph of the Function:
Work Step by Step
b.) The graph is undefined at the inflection point since $f''(x)$ has a vertical asymptote at x = 0.
a.) The graph of all of the functions is shown below. In RED is $f(x)$ and in PURPLE is $f'(x)$ and in BLACK is $f''(x)$.
