Find the local maximum and minimum values of the function f (a) = -5ac2 + 4ac + 8. Enter your answers in increasing order. . If there is just one local maximum or minimum value, then in the second row below enter NA as the answer for "x =" and select NA in the "there is" drop-down menu. . If there are no local maximum or minimum values, then in both rows below enter NA as the answer for "x =" and NA in the "there is" drop-down menu. At * = there is Click for List At * = there is Click for List