#15019: Don't allow differentiation with respect to order in Bessel functions
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Reporter: eviatarbach | Owner:
Type: defect | Status: new
Priority: blocker | Milestone: sage-5.11
Component: symbolics | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Dependencies: | Stopgaps:
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This is wrong:
{{{
sage: var('nu z')
(nu, z)
sage: bessel_J(nu, z).diff(nu)
-1/2*bessel_J(nu + 1, z) + 1/2*bessel_J(nu - 1, z)
sage: bessel_J(nu, z).diff(z)
-1/2*bessel_J(nu + 1, z) + 1/2*bessel_J(nu - 1, z)
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/15019>
Sage <http://www.sagemath.org>
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