TANH

Purpose:

Calculates the hyperbolic tangent of any expression.

TANH(val)

val

A scalar, series or table.

A scalar, series, or table.

tanh(-5..0.01..5);gridhv;griddot

$image\tanhpic01.gif$

displays the hyperbolic tangent from –5 to 5.

tanh(pi)

returns 0.99627208.

tanh(ln(phi))

returns 0.447214 or √5 / 5

tanh(-2..0.1..2)

returns a 41 point series.

The hyperbolic tangent is defined as:

$image\tanh01.gif$

for all complex z.

$image\tanh02.gif$

SETDEGREE and SETRADIAN have no effect on this function because it always operates in radians.