> > Secondly, what are you trying to collect? The D[0,0] terms or > f(xp, yp, zp, tp), x, 2) which are two different things?
What is the difference between those 2? > Given > what you are trying to do I guess it is the first one, in which > case you should have tried > > sage: term = f(x,y,z,t).derivative(x,2).subs(x=xp,y=yp,z=zp,t=tp) > > Is this the same as derivative(f(xp(x, y, z, t), yp(x, y, z, t), zp(x, y, z, t), tp(x, y, z, t)) , x, 2)? Thanks, Chris -- 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/90dd8549-61b9-4f39-b20e-fb6875cd9a36n%40googlegroups.com.
