Random:

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   Compute a random nxm matrix

   Since version 1.
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   Form:
   [r, seed] = Random( seed, n, m )
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   ------
   Inputs
   ------
   seed       (1,1)   Seed
   n          (1,1)   Rows
   m          (1,1)   Columns

   -------
   Outputs
   -------
   r          (n,m)   Random matrix
   seed               Seed

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