Question

What are the maximum and minimum values of the function y = 10 cos x in the interval [-2π, 2π]?

Answer 1

have you sketched the curve..?

Answer 2

your max and minimum will be the amplitude of the curve

Answer 3

Yes, I did. I just want to check my answer. It is 10 and -10, am I right?

Answer 4

that's correct

Answer 5

Thanks!