Opened 8 years ago

Closed 8 years ago

#15019 closed defect (fixed)

Don't allow differentiation with respect to order in Bessel functions

Reported by: eviatarbach Owned by:
Priority: blocker Milestone: sage-5.11
Component: symbolics Keywords:
Cc: Merged in: sage-5.11.rc1
Authors: Eviatar Bach Reviewers: Volker Braun
Report Upstream: N/A Work issues:
Branch: Commit:
Dependencies: Stopgaps:

Status badges

Description (last modified by vbraun)

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)

Apply trac15019.patch

Attachments (1)

trac15019.patch (4.2 KB) - added by eviatarbach 8 years ago.

Download all attachments as: .zip

Change History (6)

Changed 8 years ago by eviatarbach

comment:1 Changed 8 years ago by eviatarbach

  • Status changed from new to needs_review

comment:2 Changed 8 years ago by vbraun

  • Authors set to Evitar Bach
  • Description modified (diff)
  • Reviewers set to Volker Braun

Looks good to me

comment:3 Changed 8 years ago by vbraun

  • Status changed from needs_review to positive_review

comment:4 Changed 8 years ago by eviatarbach

  • Authors changed from Evitar Bach to Eviatar Bach

Thanks!

comment:5 Changed 8 years ago by jdemeyer

  • Merged in set to sage-5.11.rc1
  • Resolution set to fixed
  • Status changed from positive_review to closed
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