Status: Valid
Owner: ----
CC: [email protected]
Labels: Type-Defect Priority-Medium Integration
New issue 3852 by [email protected]: Multiple integrals with piecewise
should be smarter
http://code.google.com/p/sympy/issues/detail?id=3852
>>> integrate(y*cos(x*y), x, y)
⌠
⎮ ⎧ x⋅y for y = 0
⎮ ⎨ dy
⎮ ⎩sin(x⋅y) otherwise
⌡
Some issues here:
- The second integral was not computed.
- x*y == sin(x*y) if y = 0. The division check should check to see if it
cancels something out. (this logic could also go in Piecewise, though it
might be too smart for it)
- Does it even make sense to have a pointwise condition on the integration
variable? If not, is it possible to pass this information through to the
subalgorithms?
While we fix this, what is a simple double indefinite integral that doesn't
do this (for the tutorial)?
--
You received this message because this project is configured to send all
issue notifications to this address.
You may adjust your notification preferences at:
https://code.google.com/hosting/settings
--
You received this message because you are subscribed to the Google Groups
"sympy-issues" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sympy-issues?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.
