ATANH

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.

Example

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)