#7743: Piecewise integration fixes [with patch; needs review]
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Reporter: pbutler | Owner: AlexGhitza
Type: defect | Status: new
Priority: minor | Milestone: sage-4.3
Component: algebra | Keywords: integration
Work_issues: | Author:
Upstream: N/A | Reviewer:
Merged: |
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This patch fixes two issues with the piecewise class, brought up in this
sage-support thread:
http://groups.google.com/group/sage-
support/browse_thread/thread/18d830ece7826898/86c401e4d6b8f3dd
The first issue is that when a piece of the function belongs to the
Integer ring, integration doesn't work. This is fixed by coercing each
piece to the symbolic expression ring.
The second issue is that there are cases where maxima needs to be given
assumptions about the domain of x for the piece being integrated. This is
fixed with the assume and forget functions.
Additional unit tests have been added (or existing tests modified) for
each issue.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7743>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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