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acosh(1)                       Scilab Function                       acosh(1)
NAME
  acosh - hyperbolic cosine inverse

CALLING SEQUENCE
  [t]=acosh(x)

PARAMETERS

  x         : real or complex vector

  t         : real or complex vector

DESCRIPTION
  the components of vector t are the ArgCosh of the corresponding entries of
  vector x.  Definition domain is ]1,+infinity[.  It takes his values in

       ]0,+inf[ x ]-pi,pi] and  [0] x [0,pi]

EXAMPLE
  x=[0,1,%i];
  cosh(acosh(x))