BESSELI

Syntax:

BESSELI ( x , n )

Description: The modified Bessel function In(x), which is equivalent to the Bessel function Jn(x) evaluated for purely imaginary arguments.

Mathematical Formula:

The n-th order modified Bessel function of the variable x is:

Arguments:

Name

Type

Description

x

number

The value at which to evaluate the function.

n

number

The order of the Bessel function. This value is truncated to an integer.

Return Type and Value: number – The Bessel function In(x).

However, if n < 0, #NUM! is returned.

example: