Find the critical point and the interval on which the given function is increasing
or decreasing, and apply the First Derivative Test to the critical point. Let
$f(x) = \frac{-8}{x^2 + 4}$
Critical Point =
Is $f$ a maximum or minimum at the critical point?
The interval on the left of the critical point is
On this interval,
$f$ is ?
$f'$ is ?
while
The interval on the right of the critical point is
On this interval,
$f$ is ?
$f'$ is ?
while
