Updates:
Labels: Series
Comment #4 on issue 4125 by [email protected]: Issues with Bessel
functions
http://code.google.com/p/sympy/issues/detail?id=4125
3) lambdify has trouble with Bessel functions when running a script.
Is there besselj function in numpy? I don't think so. In that case, this
is not a bug.
limit(x*diff(y1,x,x)/y1,x,.1).evalf()
I assume, that's typo and you are talking about:
limit(x*diff(y1,x,x)/y1, x, 0)
Yes, this fails. We should implement series expansions for besselk/besseli
around 0.
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