What is BESSELK function in Excel?
The BESSELK function is one of the Engineering functions of Excel.
It Returns the modified BESSELK function Kn(x).
We can find this function in Engineering of insert function Tab.
How to use BESSELK function in excel
- Click on an empty cell (like F5 ).

2. Click on the fx icon (or press shift+F3).

3. In the insert function tab you will see all functions.

4. Select Engineering category.
5. Select BESSELK function.
6. Then select ok.

7. In the function arguments Tab you will see BESSELK function.
8. X section is the value at which to evaluate the function.
9. N section is the order of the Bessel function.
10. You will see the results in the formula result section.

Examples of BESSELK function in Excel
Example 1:
How to use BESSELK function in excel
You can see examples of BESSELK function below:

besselk(A2,B2) ----->>>>answer is 71.867
besselk(A3,B3) ----->>>>answer is 0.036
besselk(A4,B4) ----->>>>answer is 0.154
besselk(A5,B5) ----->>>>answer is 0.0006
besselk(A6,B6) ----->>>>answer is 0.040
Purpose of BESSELK function
It Returns the modified BESSELK function Kn(x).
Return value of BESSELK function
It returns a number.
Arguments of BESSELK function
This function has just 2 Argument.
The argument of BESSELK function is number.
X section is the value at which to evaluate the function.
N section is the order of the Bessel function.
The argument of BESSELK function is required and not optional.
BESSELK(number) = number
Version of excel supports BESSELK function
This function is available for all excel versions (2003-2019)