BESSELJ

BESSELJ is Engineering function of Microsoft Excel. It Returns the Bessel function.


Syntax
BESSELJ(x,n)

X   is the value at which to evaluate the function.
N   is the order of the Bessel function. If n is not an integer, it is truncated.
Remarks

• If x is nonnumeric, BESSELJ returns the #VALUE! error value.
• If n is nonnumeric, BESSELJ returns the #VALUE! error value.
• If n < 0, BESSELJ returns the #NUM! error value.
• The n-th order Bessel function of the variable x is:
  
  [Equation]
  where:
  [Equation]
  
  is the Gamma function.

Example
The example may be easier to understand if you copy it to a blank worksheet.

How to copy an example

1. Create a blank workbook or worksheet.
2. Select the example in the Help topic.  Note    Do not select the row or column headers.
   
   
   Selecting an example from Help
3. Press CTRL+C.
4. In the worksheet, select cell A1, and press CTRL+V.
5. To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.

1 2	A B Formula Description (Result) =BESSELJ(1.9, 2) Bessel function at 1.9 with an order of 2 (0.329926)