ACOT

Purpose:

Calculates the inverse cotangent of any expression.

ACOT(val)

val

A scalar, series or table.

A scalar, series, or table.

acot(-3*pi..pi/100..3*pi);gridhv;griddot

$image\acotpic01.gif$

displays in inverse cotangent function form -3π to 3π.

acot(1)

returns 0.78539816, or π/4.

acot(-2..0.1..2)

returns a 41 point real series.

The inverse cotangent is defined as:

$image\acot01.gif$

for all complex z. The function is multi-valued and this definition places the branch cut in the complex plane at [-i, i].

$image\acot03.gif$

The function calculates in radians unless degrees are specified with the SETDEGREE function.