#4102: make bessel_J symbolic
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Reporter: jwmerrill | Owner: burcin
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.9
Component: calculus | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers: Karl-Dieter Crisman
Authors: Benjamin Jones | Merged in:
Dependencies: | Stopgaps:
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Comment (by benjaminfjones):
So the correct output is:
{{{
(bessel_J(0, 1) + bessel_J(1, 1))*bessel_Y(0, x)/(bessel_Y(0,
1)*bessel_J(1, 1) - bessel_Y(1, 1)*bessel_J(0, 1)) - (bessel_Y(0, 1) +
bessel_Y(1, 1))*bessel_J(0, x)/(bessel_Y(0, 1)*bessel_J(1, 1) -
bessel_Y(1, 1)*bessel_J(0, 1))
}}}
that is both mathematically correct and what you get when you apply the
patches, run sage, and execute the commands manually.
The problem is that when you **doctest** the same exact commands in the
same exact sage, the output that comes back is different in two ways
(explained in the comment above).
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4102#comment:44>
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