Someone shows you the following steps for finding the derivative of 2 f ( 2) = 23 + 1 - 2 cos(5z + 1): f (2) = (2 + 1) (0) - (2) (322) (23 + 1) 2 + (1) sin(5z + 1) -622 (23 4 1)2 sin(5z + 1) Is this correct? If not, explain their mistake(s) and find f (2) correctly with a detailed solution