y=4cos(1/2x + pi) - 1
Amplitude______
Period_____
Phase Shift______

Question

y=4cos(1/2x + pi) - 1
Amplitude______
Period_____
Phase Shift______

anonymous · Answer

The amplitude is what is in front of cos,
meaning the amplitude is 4

anonymous · Answer

B = 1/2, so

2pi/1/2 = 4pi
That is your period

anonymous · Answer

I believe your phase shift is -1 because that shifts your entire graph

anonymous · Answer

are you sure it's not pi?

anonymous · Answer

The phase shift is the only one I am not sure about. No i am not sure it's not pi. I can see how you think that because phase shift is usually associated with what is in the parenthesis. If it does go by that, then the answer would be -1/2pi because that would cancel out the other pi.
Does that make sense?

anonymous · Answer

yes thank you!