Question

State the amplitude, period, and phase shift of the function y=-3 cos (3x + 3pi/2)

Answer 1

To find the phase shift n the function: \[y=-3 \cos \left( 3x+\frac{ 3\pi }{ 2 } \right)\] You will need to factor the coefficient of x out of the ( )'s first.

Answer 2

thanks i got it form here i just didn't know where to begin...