What is the rate of change for f (x) = - 2 cos (4x - 3) on the interval from x = pi / 4 to x = pi / 2? A. - pi / 16. B. - 16 / pi. C. 2 / pi. D. pi / 2

So the problem ask to calculate and choose among the following choices the rate of change for f (x) = - 2cos (4x-3) base on the intervals in the given. Base on the given data, the answer would be letter B. - 16/pi. I hope you are satisfied with my answer and feel free to ask for more