Inverse hyperbolic secant : Representations through equivalent functions (subsection 27/02/03/28)

ArcSech

$Mathematica Notation$

Involving sech^-1(2^1/2/(1-(1+c z²)^1/2)^1/2)

Involving sech^-1(2^1/2/(1-(1+z²)^1/2)^1/2) and cos^-1(i z)

Involving sech^-1(2^1/2/(1-(1-z²)^1/2)^1/2) and cos^-1(z)