3.5.2.1.4 Asech

Description

This function is used to return the inverse hyperbolic secant.

Syntax

 double asech(double x)

Parameters

x

should be in (0,1], or a missing value is returned.

Return

Return the inverse hyperbolic secant of x.

Example

dd=asech(0.5);
dd=; //Should return 1.31696.

See Also

asinh, acosh, atanh, acsch