I'd love to have someone implement matrix derivative. This shouldn't be hard for someone who understands them well.
On Mon, Apr 28, 2014 at 7:37 PM, Aaron Meurer <asmeu...@gmail.com> wrote: > These little issues with the transpose are the reason this isn't > implemented yet. > > Aaron Meurer > > On Mon, Apr 28, 2014 at 2:18 PM, Tim Lahey <tim.la...@gmail.com> wrote: > > It's only 2*A*x is A is symmetric (A.T = A). Otherwise it's (A.T + A). > That said, I don't think Matrix Expressions support derivatives at the > moment. > > > > Cheers, > > > > Tim. > > > > On 2014-04-28, at 1:27 PM, Gustavo <gustavo.goret...@gmail.com> wrote: > > > >> Can I have matrices and vectors A and x with compatible but unspecified > dimensions. And get diff(x.T * A * x , x) return 2*A*x ? > >> > >> Thanks, > >> Gustavo > > > > -- > > You received this message because you are subscribed to the Google > Groups "sympy" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to sympy+unsubscr...@googlegroups.com. > > To post to this group, send email to sympy@googlegroups.com. > > Visit this group at http://groups.google.com/group/sympy. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/340D188D-2402-47E1-829B-1E42297C89BD%40gmail.com > . > > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sympy+unsubscr...@googlegroups.com. > To post to this group, send email to sympy@googlegroups.com. > Visit this group at http://groups.google.com/group/sympy. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/CAKgW%3D6L4S-R2fdWrgo%2ByUO9QJKgpaj7icrpRgw08%3DjXTGXM8zQ%40mail.gmail.com > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAJ8oX-Hfp90LqkHcdW5TzcrTqxvV4yCMj5ZOCkN64JKGSps1Kg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
