Returns the Bessel function of the second kind at x for the specified order. The Bessel functions of the second kind are defined as the solutions to the Bessel differential equation
which are singular at the origin.
The n-th order Bessel function of x is:
where J denotes the Bessel function of the first kind.
The plot below shows the Bessel function for n=0,1,2,3,4,5.
Order must be greater than or equal to 0. If order is not an integer, it is truncated. X must be greater than or equal to 0. For more information on the Bessel function see the reference at MathWorld.
Windows 7, 2008,
Vista, XP, NT,
ME, 2003, 2000,
Windows 98, 95