BESSELK ( x , n )
Description: The modified Bessel function Kn(x), which is equivalent to using the Bessel function Jn(x) and Yn(x).
Mathematical Formula:
The n-th order modified Bessel function of the variable x is:
where Jn and Yn are the J and Y Bessel functions, respectively.
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 Kn(x).
However, if n < 0, #NUM! is returned.
[Example:
BESSELK(2.345,5) results in 3.904137225
end example]