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Math Help - amplitude and period...need help!!

  1. #1
    evan112oo7
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    Exclamation amplitude and period...need help!!

    What are the amplitude and period of the function f(x)=-3+2cos((pi-3)x+4)???
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  2. #2
    o_O
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    Given y = Acos(B(x + C)) + D or y = Asin(B(x + C)) + D,

    A = amplitude
    \frac{2\pi}{B} = period
    C = phase (horizontal) shift
    D = vertical shift
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