ArcSech

ArcSech[z] gives the inverse hyperbolic secant sech⁻¹(z) of the complex number z.

Examples

Evaluate the inverse hyperbolic secant:

ArcSech[1/2]
(* Log[2 + Sqrt[3]] *)

Numerical value:

N[ArcSech[0.5]]
(* 1.31696 *)

Please visit the official Wolfram Language Reference for more details.