Section 3.1: Problem 4 Previous Problem Problem List Next Problem (1 point) Let f (ac) = V25 - x2. At what x-values is f' (a) zero or undefined? (If there is more than one such x-value, enter a comma-separated list; if there are no such x-values, enter "none".) On what interval(s) is f () increasing? f (z) is increasing for x in (-5,0) (If there is more than one such interval, separate them with "U". If there is no such interval, enter 'none".) On what interval(s) is f (x) decreasing? f (x) is decreasing for x in (0,5) (If there is more than one such interval, separate them with "U". If there is no such interval, enter "none".) Note: You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem 2 times. Your overall recorded score is 67%. You have 3 attempts remaining. Type here to search O Hi m a