# What is the range of #y = 3 cos 4x #?

##### 1 Answer

Feb 11, 2017

#### Answer:

#### Explanation:

The **range** is the list of all values that you get when applying the domain (the list of all allowable

In the equation

For

And we can see that in the graph (the two horizontal lines help to show the range maximum and minimum):

graph{(y-3cos(4x))(y-0x+3)(y-0x-3)=0 [-10, 10, -5, 5]}