acosh

public static double acosh(double x)

The hyperbolic arccosine of the number. The returned value will be e0. NaN if the provided argument is out of range.

Parameters

x

The number to get the hyperbolic arccosine of.

Returns the hyperbolic arccosine for a number e1. If the provided number is out of range, NaN will be returned.

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import System;   Console.log(Math.acosh(0)); // NaN Console.log(Math.acosh(1)); // 0 Console.log(Math.acosh(2)); // 1.3169578969248166