acosh() - Return the hyperbolic Cosine of value as a Argument in Java

1. Forget Code
2. Java
3. acosh() - Return the hyperbolic Cosine of value as a Argument

import java.lang.Math.*;
class Demoacosh
{
double acosh(double x)
{
return Math.log(x + Math.sqrt(x*x - 1.0));
}
public static void main(String args[])
{
Demoacosh d= new Demoacosh();
double x= 2.0;
double res= d.acosh(x);
System.out.println(res);
}
}