BESSELK function

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





The BESSELK function syntax has the following arguments:


  • N    Required. The order of the function. If n is not an integer, it is truncated.


  • If x is nonnumeric, BESSELK returns the #VALUE! error value.

  • If n is nonnumeric, BESSELK returns the #VALUE! error value.

  • If n < 0, BESSELK returns the #NUM! error value.

  • The n-th order modified Bessel function of the variable x is:


    where Jn and Yn are the J and Y Bessel functions, respectively.






=BESSELK(1.5, 1)

Modified Bessel function at 1.5 with an order of 1.


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