CSCH

Purpose:

Returns the hyperbolic cosecant of any expression.

CSCH(val)

val

A scalar, series or table.

A scalar, series, or table.

csch(-10..0.01..10);gridhv;griddot;sety(-10, 10)

$image\cschpic01.gif$

displays the hyperbolic cosecant from –10 to 10.

csch(pi)

returns 0.086589538.

csch(-2..0.1..2)

returns a 41 point series.

The hyperbolic cosecant is defined as:

$image\csch01.gif$

for all complex z.

$image\csch02.gif$

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

At 0, this function returns ∞. Near 0, it returns a very large real number.