COTH

Purpose:

Returns the hyperbolic cotangent of any expression.

Syntax:

COTH(val)

val

-

A scalar, series or table.

Returns:

A scalar, series, or table.

Example:

coth(-5..0.01..5);gridhv;griddot;sety(-4,4);setytic(1)

 

 

image\cothpic01.gif

 

displays the hyperbolic cotangent from 5 to 5.

Example:

coth(pi)

 

returns 1.0037419.

Example:

coth(-2..0.1..2)

 

returns a 41 point series.

Remarks:

The hyperbolic cotangent is defined as:

 

image\coth01.gif

 

for all complex z.

 

image\coth02.gif

 

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

 

At 0, this function returns a math error. Near 0, it returns very large results.

See Also:

ACOTH

ACOT

COT

GCOTH

TANH

TRIGONOMETRIC FUNCTIONS