Question

What is the period and amplitude for `z = 5cos(u/6)+11`?

Answer 1

This function has a period of `12pi` and amplitude 10.

If you have a trigonometric function such as

`f(x)=a*cos(bx)+c` then its period is `P=(2pi)/a` and its amplitude is `2a` because the values of the function change from `-a+c` to `a+c`.