﻿ BESSELJ function

# BESSELJ function

This article describes the formula syntax and usage of the BESSELJfunction in Microsoft Excel.

## Description

Returns the Bessel function.

## Syntax

BESSELJ(X, N)

The BESSELJ function syntax has the following arguments:

• X    Required. The value at which to evaluate the function.

• N    Required. 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.

How do I copy an example?

Important   Do not select the row or column headers.

Selecting an example from Help

2. Press CTRL+C.

3. In Excel, create a blank workbook or worksheet.

4. In the worksheet, select cell A1, and press CTRL+V.

Important   For the example to work properly, you must paste it into cell A1 of the worksheet.

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.

After you copy the example to a blank worksheet, you can adapt it to suit your needs.

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

Applies To: Excel 2010, Excel Starter, Excel Online, SharePoint Online

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