I am am not sure if a2 is correct

4. ["14 Points] DETAILS PREVIOUS ANSWERS | MY NOTES Consider the polynomial function for) = x5 - 3x3 + 4x. (a) Find the Intervals on which f is Increasing. (Hint: Showx = 1 is a critical number. Enter your answer as a comma-separated list of intervals.) E Find the intervals on which f is decreasing. (Enter your answer as a comma-separated list of intervals.) (b) Find the open intervals on which f is concave up. (Enter your answer as a comma-separated list of intervals.) E Find the open intervals on which f is concave down. (Enter your answer as a comma-separated list of intervals.) S (c) Find the local extreme values of f. (Round your answers to three decimal places.) local minimum value smaller value local minimum value larger value local maximum value smaller value local maximum value larger value HUGH (d) Find the global extreme values of f on the closed, bounded interval [2, 2]. global minimum value |:| global maximum value |:| (e) Find the points of inection of f. (Round your answers to three decimal places.) smallest xvalue (x.l'{X)) = U: ) = (S ) largest x-value (X. x = 0:, )