MATLAB Function Reference

atanh

Inverse hyperbolic tangent

Syntax

• Y = atanh(X)
  

Description

The atanh function operates element-wise on arrays. The function's domains and ranges include complex values. All angles are in radians.

Y = atanh(X) returns the inverse hyperbolic tangent for each element of X.

Examples

Graph the inverse hyperbolic tangent function over the domain .

• x = -0.99:0.01:0.99; 
  plot(x,atanh(x)), grid on
  

Definition

The hyperbolic inverse tangent can be defined as

Algorithm

atanh uses FDLIBM, which was developed at SunSoft, a Sun Microsystems, Inc. business, by Kwok C. Ng, and others. For information about FDLIBM, see http://www.netlib.org.

See Also

atan2, atan, tanh

atan2

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