The Excel Besselj function returns the Bessel function, Jn(x), for a specified order and a given value of x.
Syntax: BESSELJ( x, n )
where the function arguments are:
|x||–||The value at which the function is to be evaluated|
|n||–||The order of the Bessel function (must be a positive integer)
(If the supplied value of n is a decimal, Excel truncates this value to an integer)
Besselj Function Example
The chart on the right shows the Bessel functions, Jn(x), of order 1, 2 and 3.
The value of any of these functions at a given value of x, can be evaluated using the Excel Besselj function.
For example, the order 1 Bessel function, at x=2.5 is calculated by the following:
This gives the result 0.497094103.
Besselj Function Errors
If you get an error from the Excel Besselj function, this is likely to be one of the following :
|#NUM!||–||Occurs if the supplied value of n is < 0|
|#VALUE!||–||Occurs if any of the supplied arguments are non-numeric|
|#NAME?||–||Occurs when Analysis ToolPak add-in is not enabled in your Excel.|