On Mar 28, 10:23 am, Saptarshi Mandal <[email protected]> wrote: > Tests work now.
Nice! > I commented out a few because of some really strange > issues. One involved integrating a function defined as 0.5*x*y wrt y, > this gave an error saying it expected an integer and instead got > 0.50000000 or something like that. This seems like a bug (probably in polys). But actually you should not use floating point arithmetic for this. Rather write 'S(1)/2' instead of '0.5'. > The other involves how i deal with equalities. Most of the ide solving > techniques requires me to "grow" expressions and so I normally start > out by defining an equality like > neweq = Eq(0,0) and then adding terms to the lhs > I dont know if its idiomatic, or even the right way to do it, but it > worked fine until I got the tests to work. This has broken the series > method. When testing for equality of a and b, it makes sense to look at a-b and try to simplify it to zero (using cancel() or more advanced simplification routines). > I have stopped work on the laplace transform for now and intend to get > some basic functionality of combinatorica running on sympy as a POC > for my soc project. This sounds great, let us know if you run into problems. Vinzent -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
