Inverse hyperbolic tangent: Representations through equivalent functions (subsection 27/02/12/13)

ArcTanh

$Mathematica Notation$

Involving tanh^-1((z-a)^1/2/(z+a)^1/2)

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

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