Hi, On Fri, Jul 10, 2009 at 9:58 AM, Burcin Erocal<bur...@erocal.org> wrote: > > I'll try to spare some time for pynac this weekend, and look at the > changes you need for the derivatives to work.
Thanks! > I'm not convinced that > adding a new field to the function_options class to switch the > application of the chain rule on/off is really necessary at this point. > I might just add a quick hack to special case the integral function you > define, unless someone comes up with other examples where disabling the > chain rule is needed. There are at least three other functions for which new derivative returns mathematically wrong results because it uses chain rule blindly (1) limit( f(x), x=a) (2) laplace( f(t), t, s) (3) inverse_laplace ( F(s), s, t) Cheers, Golam --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send 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 -~----------~----~----~----~------~----~------~--~---
