Hi I am working on PDE's and I am trying to get the symbolic expression for multivariabe finite differences
mainly I wan the expression for d/dx(d/dy f), however d2pdxdy=as_finite_diff(p(x,y,z,t).diff(x,y),[x,x-h,y,y+h]) doesn't work, nor any possible combination. Is this just not implemented or am I doing it wrong. cheers mathias -- 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 https://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/72063849-9fa3-471f-87e4-e5a3b8717255%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
