Le mardi 28 février 2017 18:32:19 UTC+1, mmarco a écrit : > > If it makes sense to use integration by parts or not deppends heavily on > the actual expression. I suspect that, if you try to make a sane criterion > te decide when to apply it, you could end up with something very > complicated as well. Ther is reason why there are so many rules in RUBI > (although I heard that the author is considering reorganizing them in a > decission tree, which might simplify things to some extent). >
The only reason I could see for that number of rules is that rubi works like a student who does not want to understand "the big picture" about integration but has a fabulous memory and remembers all the integrals from all known textbooks. But perhaps I'm wrong, that's why I was asking how it cooperates with classical methods, like partial fraction decomposition or integration by part, change of variables etc. I'm just not convinced by that number of rules and the fact that some of them are not grouped in an algorithm. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
