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IBESSEL

IBESSEL

Returns the value of the modified bessel function

Category: Mathematical

Syntax
Arguments
Details
Examples

Syntax

IBESSEL(nu,x,kode)

Arguments

nu
is numeric.
Range: nu [ge] 0

x
is numeric.
Range: x [ge] 0

kode
is a nonnegative integer.

Details

The IBESSEL function returns the value of the modified bessel function of order nu evaluated at x (Abramowitz, Stegun 1964; Amos, Daniel, Weston 1977). When kode equals 0, the bessel function is returned. Otherwise, the value of the following function is returned:

[IMAGE]

Examples

SAS Statements Results 

x=ibessel(2,2,0);
 

0.6889484477
 

x=ibessel(2,2,1);
 

0.0932390333


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