WorksheetFunction.BesselI Method

Excel Developer Reference

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

Syntax

expression.BesselI(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 Bessel function. If n is not an integer, it is truncated.

Return Value
Double

Remarks

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

• If n is nonnumeric, BesselI generates an error value.

• If n < 0, BesselI generates an error value.

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

  

See Also

• WorksheetFunction Object
• WorksheetFunction Object Members