# How do you find the period and amplitude for #y=1/4 cos((2x)/3)#?

##### 1 Answer

Jun 28, 2016

I found:

#### Explanation:

The amplitude will be the number in front of your

The period is a bit more tricky; you use the number in front of the

Graphically:

graph{(1/4)cos(2x/3) [-10, 10, -5, 5]}