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sech - Hyperbolic secant

Syntax

Y = sech(X)

Description

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

Y = sech(X) returns an array the same size as X containing the hyperbolic secant of the elements of X.

Examples

Graph the hyperbolic secant over the domain

x = -2*pi:0.01:2*pi; 
plot(x,sech(x)), grid on

Algorithm

sech uses this algorithm.

Definition

The secant can be defined as

Algorithm

sec 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

asec, asech, sec

secd

selectmoveresize

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