ARTANH Function

Returns the inverse hyperbolic tangent.

Category:

Hyperbolic

Syntax

ARTANH(x)

Required Argument

x

specifies a numeric constant, variable, or expression.

Range

–1 < x < 1

Details

The ARTANH function computes the inverse hyperbolic tangent. The ARTANH function is mathematically defined by the following equation, where –1 < x< 1:

\begin{matrix} A R T A N H (x) = \frac{1}{2} l o g (\frac{1 + x}{1 - x}) \end{matrix}

Example

The following example computes the inverse hyperbolic tangent.

data _null_;
   x=artanh(0.5);
   put x=;
run;

SAS writes the following output to the log:

x=0.5493061443

ARTANH Function

Syntax

Required Argument

x

Details

Example

See Also