MATLAB Function Reference

atan, atanh

Inverse tangent and inverse hyperbolic tangent

Syntax

Y = atan(X)
Y = atanh(X)

Description

The atan and atanh functions operate element-wise on arrays. The functions' domains and ranges include complex values. All angles are in radians.

Y = atan(X) returns the inverse tangent (arctangent) for each element of X.

For real elements of X, atan(X) is in the range .

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

Examples

Graph the inverse tangent function over the domain and the inverse hyperbolic tangent function over the domain

x = -20:0.01:20; plot(x,atan(x))
x = -0.99:0.01:0.99; plot(x,atanh(x))

Algorithm

See Also

atan2, tan, tanh

assignin

atan2