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Given the function y = 3cos(3x + pi), identify:
Amplitude (if applicable, give the answer in fractional form)

Period (in radians as a multiple of pi - note: do not write "rad" or "radians" in your answer)

Phase Shift (if the shift is right, enter + and if to the left, enter - before the number; if none, enter the number zero)

  • trig -

    y = 3cos(3x + pi)

    y = 3cos 3(x + π/3)

    amplitude : 3
    period = 2π/3

    phase shift: π/3 to the left

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