Returns the inverse hyperbolic tangent of a number. Number must be between -1 and 1 (excluding -1 and 1). The inverse hyperbolic tangent is the value whose hyperbolic tangent is number; ATANH(TANH(number)) equals number.
Syntax
ATANH(number)
Number is any real number between 1 and -1.
Examples
| Formula |
Description (Result) |
| =ATANH(0.76159416) |
Inverse hyperbolic tangent of 0.76159416 (1, approximately) |
| =ATANH(-0.1) |
Inverse hyperbolic tangent of -0.1 (-0.10034) |