#7491 closed defect (fixed)
solve(x==x,x) fails
| Reported by: | robert.marik | Owned by: | burcin |
|---|---|---|---|
| Priority: | major | Milestone: | sage-4.3 |
| Component: | symbolics | Keywords: | |
| Cc: | Merged in: | sage-4.3.rc1 | |
| Authors: | Robert Mařík | Reviewers: | Karl-Dieter Crisman |
| Report Upstream: | N/A | Work issues: | |
| Branch: | Commit: | ||
| Dependencies: | Stopgaps: |
Description
sage: solve([x==x],x)
gives an exception.
Maxima says this:
$ maxima -q (%i1) solve([x=x],x); (%o1) all (%i2)
There is a short discussion about this topic.
Attachments (1)
Change History (5)
Changed 11 years ago by
comment:1 Changed 11 years ago by
- Status changed from new to needs_review
comment:2 Changed 11 years ago by
- Report Upstream set to N/A
- Status changed from needs_review to positive_review
Positive review. I'm not sure what the changes in relation.py bring to the game, but they don't hurt either.
comment:3 Changed 11 years ago by
- Merged in set to sage-4.3.rc1
- Milestone changed from sage-4.3.1 to sage-4.3
- Resolution set to fixed
- Reviewers set to Karl-Dieter Crisman
- Status changed from positive_review to closed
comment:4 Changed 4 years ago by
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attached patch does the following
[marik@um-bc107 /opt/sage]$ ./sage ---------------------------------------------------------------------- | Sage Version 4.2.1, Release Date: 2009-11-14 | | Type notebook() for the GUI, and license() for information. | ---------------------------------------------------------------------- Loading Sage library. Current Mercurial branch is: solve sage: y=var('y');solve(SR(0),y,solution_dict=True) {y: r1} sage: y=var('y');solve(SR(0),y,solution_dict=True,multiplicities=True) ({y: r1}, []) sage: solve(x==x,x,multiplicities=True) ([x == r1], [])All tests in symbolic and calculus passed.