WorksheetFunction.BesselK method (Excel)

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

Syntax

expression.BesselK (Arg1, Arg2)

expression A variable that represents a WorksheetFunction object.

Parameters

Name	Required/Optional	Data type	Description
Arg1	Required	Variant	The value at which to evaluate the function.
Arg2	Required	Variant	The order of the function. If n is not an integer, it is truncated.

Return value

Double

Remarks

If x is nonnumeric, BesselK generates an error value.

If n is nonnumeric, BesselK generates an error value.

If n < 0, BesselK generates an 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.

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