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WorksheetFunction.BesselI method (Excel)

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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 Bessel function

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