Suppose that
f(x) = 13 x - 6 x^3.

(A) Find the average of thex values of all local maxima of
f .

Note: If there are no local maxima, enter -1000.

(A) Find the average of the

Note: If there are no local maxima, enter -1000.

Average of

(B) Find the average of the

Note: If there are no local minima, enter -1000.

Average of

(C) Find the average of the

Note: If there are no inflection points, enter -1000.

Average of

You can earn partial credit on this problem.