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Polygon sine functions?? what is this??

  1. Nov 9, 2015 #1

    I was wondering how I could find the equations for the bottom two functions. I understand that the amplitude is not constant like that in the circular sine function--could someone please help me out?


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  2. jcsd
  3. Nov 9, 2015 #2


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    Both of them can be represented as Fourier series. Sine is special case where there is only one term in the series.
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