id	summary	reporter	owner	description	type	status	priority	milestone	component	resolution	keywords	cc	work_issues	upstream	reviewer	author	merged	dependencies	stopgaps
7743	Piecewise integration fixes	pbutler	burcin	"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."	defect	closed	minor	sage-4.3.1	calculus	fixed	integration			N/A	David Joyner	Paul Butler	sage-4.3.1.alpha2