Find 𝑑𝑦/𝑑𝑥and hence determine the rate of change of y with respect to x for the following circular functions:

Question

a. 𝑦 = 4 𝑐𝑜𝑠(2𝑥)
b. 𝑦 = 𝑠𝑖𝑛E2 (2𝑥)

Please assist thanks in advance.