Asked by Sean

Write an equation of the cosine function with the given amplitude, period, phase shift, and vertical shift.

amplitude = 3, period = pi, phase shift = -3/4 pi, vertical shift = -3
Answered by Sean
y = + or - 3 cos (2 theta + 3/2 pi) - 3 is my answer
Answered by Steve
Looks good to me.
I'd go with the +3cos(2θ + 3π/2)-3
since the cosine function is what is being given, not a flipped or shifted cosine.
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