For each critical point , indicate if it is local maximum, minimum or neither

Suppose f has a continuous derivative whose values are given in the following table. 5 6 7 8 9 10 11 12 13 14 15 f' (x) 5 2 -2 -5 - 3 -1 2 3 1 - 1 (a) Estimate the x-coordinates of critical points of f for 5