ATanh
Returns the inverse hyperbolic tangent of a number greater than -1 and less than +1.
Syntax
ATanh(number)ArcTanh(number)
number = number greater than -1 and less than +1 whose inverse hyperbolic tangent you want to calculate
Remarks
If number is not less than or equal to -1 or greater than or equal to +1, the function will return a zero.
This function is the inverse of Tanh.
Example
ATanh(-0.1) = -0.10034 (inverse hyperbolic tangent of -0.1)