gives the inverse hyperbolic tangent of the complex number .
- Mathematical function, suitable for both symbolic and numerical manipulation.
- For certain special arguments, ArcTanh automatically evaluates to exact values.
- ArcTanh can be evaluated to arbitrary numerical precision.
- ArcTanh automatically threads over lists.
- ArcTanh[z] has branch cut discontinuities in the complex plane running from to and to .
Introduced in 1988