BESSELJ - Excel - Microsoft Office Online

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BESSELJ

Applies to: Microsoft Office Excel 2003

Returns the Bessel function.

If this function is not available, and returns the #NAME? error, install and load the Analysis ToolPak add-in.

Show How?

On the Tools menu, click Add-Ins.
In the Add-Ins available list, select the Analysis ToolPak box, and then click OK.
If necessary, follow the instructions in the setup program.

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:

where:

is the Gamma function.

Example

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

Show How to copy an example

Create a blank workbook or worksheet.
Select the example in the Help topic.
Note Do not select the row or column headers.

Selecting an example from Help
Press CTRL+C.
In the worksheet, select cell A1, and press CTRL+V.
To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Tools menu, point to Formula Auditing, and then click Formula Auditing Mode.

1

2

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