Dear Karl-Dieter
FYI, this thread, reposted by Éric Gourgoulhon on ~sage-devel~, has moved here <https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!topic/sage-devel/OrHqcfgftaw> . Le dimanche 2 août 2020 02:57:20 UTC+2, kcrisman a écrit : Just for information, I believe the derivatives are all handled in Pynac. > That’s what a cursory look shows. But it seems quite intricate… It's possible that does not have the capability of a symbolic number of > derivatives. > The rest of the thread seems to establish that it does not. It would be worth tracing through to see why 0 is the answer. Perhaps it > (Sage) interprets the syntax as being with respect to the variable m - I > think that is what we would have in that case, d/dm (d/dx f) = 0. > That’s my interpretation. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/1b74a1bf-3b85-4c36-a641-14473de2d765o%40googlegroups.com.