# What is the amplitude, period and the phase shift of #y = 2 cos (pi x + 4pi) #?

##### 1 Answer

Jan 6, 2017

Amplitude: 2. Period : 2 and phase

#### Explanation:

This graph is a periodic cosine wave.

Amplitude =

Period = 2 and

Phase:

comparing with the form

graph{2 cos (3.14x+12.57) [-5, 5, -2.5, 2.5]}