Wrong limit(x / (x + 2^x + cos(x)), x=oo)
Up to Sage 8.7 this limit returns "und" for "undefined":
sage: limit(x / (x + 2^x + cos(x)), x=infinity)
und
while it should clearly be 1.
SymPy returns the correct result:
sage: limit(x / (x+2^x + cos(x)), x=infinity, algorithm='sympy')
1
Reported to Maxima on 20180815
as Maxima bug 3459,
fixed there
by Maxima commit 0c5c018
on 20180830, fix included
in Maxima 5.42.2
to which we upgrade in #26625, merged in Sage 8.8.beta7.
In Sage >= 8.8 we get the correct value for this limit:
sage: limit(x / (x + 2^x + cos(x)), x=infinity)
1
This ticket adds a doctest for that limit computation.
Change History (19)
Report Upstream: 
N/A →
Reported upstream. No feedback yet.

Report Upstream: 
Reported upstream. No feedback yet. →
Reported upstream. Developers acknowledge bug.

Report Upstream: 
Reported upstream. Developers acknowledge bug. →
Fixed upstream, but not in a stable release.

Cc: 
Samuel Lelièvre added

Dependencies: 
→ #26625

Description: 
modified (diff)

Keywords: 
limit,maxima →
limit, maxima

Milestone: 
sage8.4 →
sage8.7

Report Upstream: 
Fixed upstream, but not in a stable release. →
Fixed upstream, in a later stable release.

Milestone: 
sage8.7 →
sage8.8

Milestone: 
→ sageduplicate/invalid/wontfix

Status: 
new →
needs_review

Status: 
needs_review →
needs_work

Branch: 
→ public/ticket/26060

Commit: 
→ 7f964965cc53474166342bcf9a1146233d9fc42b

Description: 
modified (diff)

Status: 
needs_work →
needs_review

Milestone: 
sageduplicate/invalid/wontfix →
sage9.2

Description: 
modified (diff)

Summary: 
Wrong limit calculation →
Wrong limit(x / (x + 2^x + cos(x)), x=oo)

Status: 
needs_review →
positive_review

Authors: 
→ Samuel Lelievre

Reviewers: 
→ KarlDieter Crisman

Authors: 
Samuel Lelievre →
Samuel Lelièvre

Branch: 
public/ticket/26060 →
7f964965cc53474166342bcf9a1146233d9fc42b

Resolution: 
→ fixed

Status: 
positive_review →
closed

Apparently yes.
I've reported this at Maxima bug 3459.