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Math Help - help!

  1. #1
    Junior Member mattballer082's Avatar
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    Los angeles
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    help!

    the function f(x) = sin pi over 2 times x has period 4 and the function g(x) = cos pi over 3 times x has period 6. is the function h(x)= f(x) + g(x) periodic? if so what is the period?

    please help!!
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  2. #2
    Senior Member
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    Suppose function f has period 4 and function g has period 6 and put h = f+g. Consider the relation between h(x+12) and h(x).
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