| ESBArCosh Function | 
Unit
QESBPCSMath
Declaration
Function ESBArCosh(const X: Extended): Extended;
Description
Only Positive solutions are returned. Be aware that -X is also a valid result.
| Parameters | 
| X | Value to process. | 
Category
Arithmetic Routines for FloatsImplementation
 
| function ESBArCosh (const X: Extended): Extended;
begin
     if X < 1 then
          raise EMathError.Create (rsNotDefinedForValue);
     Result := Ln (X + Sqrt (Sqr (X) - 1));
End; | 
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