SCHarm:

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   Generate a series of sine and cosine harmonics of the arguments

   Since version 1.
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   Form:
   [s, c] = SCHarm( a, n )
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   Inputs
   ------
   a                  column vector (m,1) argument (rad)
   n                  number of harmonics

   -------
   Outputs
   -------
   s                  vector of sine harmonics
   c                  vector of cosine harmonics

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