Determine the maximum and minimum of each function on the given interval.

a) ���� = 2x^3�� − 9x^2�� ,−2 ≤ x� ≤ 4
b) ���� = 12x� − x^3�� , � x∈ �[−3,5]

Do you really think you're fooling us by using a different name for each of your posts?