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 |
|
number |
The value at which to evaluate the function. | |
|
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:
BESSELI(-5.6,0) results in 46.73755194
BESSELI(2.345,5) results in 0.023137792
end example]