William Stein wrote: > Unless you can give a explanation of what you want integrating wrt x^2 > to mean, I think we should also raise an error in Sage.
That would be unfortunate. Faced with some unrecognized construct, the mathematical thing to do is to just leave it be. Whether it's meaningful is for the user to decide. You don't know what integrate(f(x), g(x)) means. Why not let someone else come up with an interpretation? Why must you close that door? Incidentally, integrate(f(x), g(x)) = integrate(f(g^(-1)(y)), y), when g^(-1) is well defined, seems plausible. I'm not saying Sage should apply such an identity, only that Sage should not prevent the user from applying it. I agree that Maxima's result for integrate(f(x), x^2) is spurious. FWIW Robert Dodier --~--~---------~--~----~------------~-------~--~----~ To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
