Given that f' (0) = f ' (2) = f' (-2) = f'(6) = f'(-6) = 0 and f' (x) # 0 for other x's f " (x) =22(62-3x2)-3x2(62-x2)+2x4 If N = number of relative maximum M = number of relative minimum C = number of critical points then 2 N + 7 M + 8 C+ f" (1) =