Inverse hyperbolic tangent: Representations through equivalent functions (subsection 27/02/12/03/14)

ArcTanh

$Mathematica Notation$

Involving tanh^-1(1/z^1/2) and sech^-1(2^1/2(1-z)^1/4/(((1-z)^1/2-(-z)^1/2)^1/2)) (4 formulas)