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pre cal

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what is the period of these functions y=1/2 cos 3pi/2
y=2 cos piX/2

  • pre cal - ,

    your first equation
    y=1/2 cos 3pi/2 has no variable on the right side, so it is simply a straight line y = 0 or the x-axis

    for y = 2 cos πx/2
    the period = 2π/(π/2)
    = π(2/π) = 2

    after you find your typo, in the first equation,
    take 2π/(coefficient of the angle) to get the period

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