SOLUTION: Let y = -2cos(3(x-pi/2)). What is the amplitude?? What is the period?? For the phase shift, which way is the graph shifted? How far is it shifted? (Note: you can enter pi

Question 205834: Let y = -2cos(3(x-pi/2)).
What is the amplitude??
What is the period??
For the phase shift, which way is the graph shifted?
How far is it shifted?
(Note: you can enter pi in the answer if applicable)
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Let y = -2cos(3(x-pi/2))
y = -2cos(3x-(3/2)pi)
What is the amplitude??
Ans: |-2|=2
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What is the period??
Ans: P = 2pi/b = 2pi/3 = (2/3)pi
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For the phase shift, which way is the graph shifted?
To the right.
-------------------------
How far is it shifted?
-c/a = (-3/2)/3 = 1/2 radian to the right
------------------------------
Cheers,
Stan H.
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