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ATANH

Description: 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, so ATANH(TANH(Number)) equals Number.

Syntax: ATANH(Number)

• Number is any real number between 1 and -1.

Example:

• ATANH(-0.1) = -0.10034 [the inverse hyperbolic tangent of -0.1]

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