Updates:
        Cc: Vinzent.Steinberg
        Labels: NeedsBetterPatch

Comment #4 on issue 1422 by asmeurer: spherical bessel functions
http://code.google.com/p/sympy/issues/detail?id=1422

Ondrej's branch rebases over the current master just fine, but it needs some work. For example, jn(n, x) fails with a recursion error (i.e., it can't handle general symbolic arguments). Assumedly the classes would be needed to
handle this well.

Was the roots issue ever worked out?

It would be nice to get these working, because it would be fairly easy to implement a solver in dsolve that returns the Bessel functions given the ODEs that define them, and I wouldn't mind doing it.

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