Suppose that [math]

(A) Find all critical values of [math]. If there are no critical values, enter -1000. If there are more than one, enter them separated by commas.
Critical value(s) =


(B) Use the second derivative test to find the [math]-coordinates of all local maxima of [math]. If there are no local maxima, enter -1000. If there are more than one, enter them separated by commas.

Local maxima at [math] =


(C) Use the second derivative test to find the [math]-coordinates of all local minima of [math]. If there are no local minima, enter -1000. If there are more than one, enter them separated by commas.

Local minima at [math] =