Exercise 4 (20 Points )_ : i i y fjahe graph of div is shown below. it = the derivative off . 6 The above graph of the derivative has an x intercepts at (-2, 0) and (2, 0). It has a minimum at (0,-4). Its domain is all real numbers. Use this graph to answer the following questions about f (Identiz which is which.) a. On what interval(s) of x will the function f be increasing? Give a reason for your answer that relates to the above graph. b. Does the function f have any local minima or maxima? If so, Where are they? Explain how you can tell from the graph above. (Be sure to identify which is which.) Graph 0fthe derivative 0. Does the function f have any inection points? If so, where? Explain how you can tell from the above graph. d. On what interval(s) of x will the function fbe concave up? Give a reason for your answer that relates to the above graphU