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ArCosH

Return inverse hyperbolic cosine

Declaration

Source position: math.pp line 376

  function ArCosH(x: Float) : Float;

Description

Arcosh returns the inverse hyperbolic cosine of its argument x. The argument x should be larger than 1. The arccosh variant of this function is supplied for Delphi compatibility.

Errors

If the argument x is not in the allowed range, an EInvalidArgument exception is raised.

See also

Name Description
arcsin Return inverse sine
arsinh Return inverse hyperbolic sine
artanh Return inverse hyperbolic tangent
cosh Return hyperbolic cosine
sinh Return hyperbolic sine
tanh Return hyperbolic tangent

Example

Program Example3;
{ Program to demonstrate the arcosh function. }
Uses math;
begin
  Writeln(arcosh(1));
  Writeln(arcosh(2));
end.