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.