Returns the modified Bessel function, which is equivalent to the Bessel functions evaluated for purely imaginary arguments.
The BESSELK function syntax has the following arguments:
X Required. The value at which to evaluate the function.
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.
In order to use the BESSELK formula, start with your edited Excellentable