MATLAB Function Reference |

**Syntax**

**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

**Algorithm**

**Definition**

**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**

sec | selectmoveresize |