BESSELK

Description

Returns the modified Bessel function, which is equivalent to the Bessel functions evaluated for purely imaginary arguments.

Sample Usage

Syntax

BESSELK(X, N)

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.

Remarks

• 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