sech

The hyperbolic secant function.

Syntax

• sech(x)

  • x is a real or complex number

Description

The hyperbolic secant function is defined by

sech(z) = 1 / cosh(z)

for all complex z.

Examples

sech(0)

1

sech(1)

0.648054273664

sech(i)

1.85081571768

See also

• cosh

• sec

• arcsech