New in Wolfram Mathematica 6: New Classes of Special Functions  previous | next 
Radial Eigenvalue Functions
Mathematica 6 adds Bessel zero functions, as well as spherical Bessel functions, making it easier to handle problems with radial symmetry.

Click for copyable input
ParametricPlot3D[{r Sin[f], r  Cos[f], 

  17 Cos[3 f] SphericalBesselJ[3, r]}, {f, 0, 2 Pi}, {r, 0, 

  BesselJZero[7/2, 3]}, Mesh -> 20, Axes -> False]