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# BESSELY function: Description, Usage, Syntax, Examples and Explanation

## What is BESSELY function in Excel?

BESSELY function is one of Engineering functions in Microsoft Excel that returns the Bessel function, which is also called the Weber function or the Neumann function.

## Syntax of BESSELY function

BESSELY(X, N)

The BESSELY function syntax has the following arguments:

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

## BESSELY formula explanation

• If x is nonnumeric, BESSELY returns the #VALUE! error value.
• If n is nonnumeric, BESSELY returns the #VALUE! error value.
• If n < 0, BESSELY returns the #NUM! error value.
• The n-th order Bessel function of the variable x is: ## Example of BESSELY function

Steps to follow:

1. Open a new Excel worksheet.

2. Copy data in the following table below and paste it in cell A1

Note: For formulas to show results, select them, press F2 key on your keyboard and then press Enter.

You can adjust the column widths to see all the data, if need be.

 Formula Description Result =BESSELY(2.5, 1) Weber’s Bessel function at 2.5 and an order of 1 0.145918138