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Trig

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f(x) = -cos(3x + pi). Find the amplitude, period, and phase shift of the function.

  • Trig -

    f(x) = -cos(3x + pi)
    = -1cos 3(x+π/3)

    ampl = 1
    period = 2π/3
    phase shift -π/3 to the left

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