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Text File  |  1989-03-06  |  251b  |  6 lines
  1. atanh ( number )
  2. arc hyperbolic tangent
  3.  
  4. atanh's single argument is a number block with numbers that must fall between -1 and +1 inclusive.
  5.  
  6. atanh returns a block the same size as the argument which contains the inverse hyperbolic tangent in radians.