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15 September, 18:29

What is the period of the sinusoid given by y=-3cos (2pi/5 x) ?

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  1. 15 September, 20:57
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    y=-3cos (2pi/5 x)

    y=a cos (bx+c) + d

    a=-3; b=2pi/5; c=0; and d=0

    Period: P=2pi/b

    P=2pi / (2pi/5)

    P=2pi*[5 / (2pi) ]

    P = (2pi*5) / (2pi)

    P=5

    Answer: T he period of the sinusoid given by y=-3cos (2pi/5 x) is 5.
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