Problem 9 Suppose that the derivative of a function f is given by f x x x 2 6 x 3 5 x 4 Find the x coordinates of the local maximum points of f Problem 9 A 0 and 2 only G 2 and 3 only D B 3 and 4 only C 0 and 3 only D 2 and 4 only E 3 only F 0 and 4 only H 2 only