Question

Identify the maximum and minimum values of the function y = 3 cos x in the interval [-2π, 2π]. Use your understanding of transformations, not your graphing calculator.

Answer 1

what is the min/max of a standard cosx function?

Answer 2

It's not given

Answer 3

This is something that you should know going foward:

the sin and cos functions are bounded by 1 and -1, as per their original definition from a circle of radius 1.