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Text File  |  1993-03-07  |  175 b   |  8 lines
  1. function y = sech(z)
  2. %SECH    Hyperbolic secant.
  3. %    SECH(X) is the hyperbolic secant of the elements of X.
  4.  
  5. %    Copyright (c) 1984-93 by The MathWorks, Inc.
  6.  
  7. y = 1./cosh(z);
  8.