Opened 6 years ago
Last modified 6 months ago
#17878 new defect
Wrong answer for a simple limit
Reported by: | vdelecroix | Owned by: | |
---|---|---|---|
Priority: | critical | Milestone: | sage-6.6 |
Component: | calculus | Keywords: | bug, limit |
Cc: | kcrisman | Merged in: | |
Authors: | Reviewers: | ||
Report Upstream: | Not yet reported upstream; Will do shortly. | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description (last modified by )
As reported in ask.sagemath.org we have
sage: f = exp(-x) / (2 + sin(x)) sage: f.limit(x=+infinity) und
but it is clearly defined. And sympy gives the expected answer
sage: import sympy sage: sympy.limit(f,x,+oo) 0
Change History (5)
comment:1 Changed 6 years ago by
- Description modified (diff)
comment:2 Changed 6 years ago by
- Cc kcrisman added
- Component changed from symbolics to calculus
comment:3 Changed 6 years ago by
- Description modified (diff)
comment:4 Changed 3 years ago by
comment:5 Changed 6 months ago by
- Keywords limit added
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here is another example of wrong limit (thanks Manuel Eberl, here with Sage 8.2):
The correct answer is 1. See https://sourceforge.net/p/maxima/bugs/3393/