#16422: cancellation of two indefinite limits
-------------------------+-------------------------------------------------
Reporter: dkrenn | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.3
Component: symbolics | Keywords: symbolic, cancellation,
Merged in: | limit, indefinite
Reviewers: | Authors:
Work issues: | Report Upstream: N/A
Commit: | Branch:
Stopgaps: | Dependencies:
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We get
{{{
sage: limit(cos(x),x=oo) - limit(sin(x),x=oo)
0
}}}
This comes from the fact that the return value of each limit is a symbolic
variable:
{{{
sage: limit(sin(x), x=oo)
ind
sage: type(limit(sin(x), x=oo))
<type 'sage.symbolic.expression.Expression'>
sage: limit(sin(x), x=oo).variables()
(ind,)
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/16422>
Sage <http://www.sagemath.org>
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