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Thread: HELP ME FIND A PERIOD FOR THIS GRAPH

  1. August 27th 2008, 05:35 PM #1
    tupac
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    Exclamation HELP ME FIND A PERIOD FOR THIS GRAPH

    y=sin(2x)-cos(0.4x)
    and give me an explanation so i would understand it too.
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  2. August 27th 2008, 06:17 PM #2
    icemanfan
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    The period of the sin(2x) function is \pi and the period of the cos(0.4x) function is 5\pi so when combined the period of the composite function is 5\pi.
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