acosh function

Input type	Output type
float complex	float complex

This function calculates the hyperbolic arcsine of the argument and returns the result. If the argument is of type int, it is first converted to float by the compiler.

Examples:

acosh(2)      ; 1.3170
acosh(2.0)    ; 1.3170
acosh((2,0))  ; (1.3170, 0)

Notes

acosh(cosh(x)) is equal to x.
The argument should be greater than -1. Otherwise this function will return an invalid value. See Invalid operations.