It's been awhile since I used Maple and I still don't understand your question. Is it possible to copy+paste a Maple session in and then just ask "can this be done in sage"?
On Sun, Nov 30, 2008 at 11:21 AM, pieter <[EMAIL PROTECTED]> wrote: > > Dear Simon, > > Thanks for your answer. > > What I want is for a linear combination X(t):=p(t)*y1(t) + q(t)*y2(t) > (p and q are known functions) to construct a new > second-order differential equation for X(t) from the orgininal > system. For a second-order system this can easily be done by hand. > I have, however, a fourth-order system. > I have written a Maple-program to perform this task for the fourth- > order system. > I wonder if this can be done with Sage. > > Regards, > Pieter > > > On Nov 27, 5:29 pm, Simon King <[EMAIL PROTECTED]> wrote: >> Dear David, >> >> On Nov 27, 5:16 pm, "David Joyner" <[EMAIL PROTECTED]> wrote: >> >> > Do you mean something like in the >> > tutorialhttp://www.sagemath.org/doc/tut/node14.html >> > or do you want something different? >> >> Looking at the original post, probably Pieter wants to manipulate y1 >> (t), y2(t) without to solve the system of equations, since this is >> possible with Maple, to some extent: >> >> > > In Maple it is possible to manipulate with y1(t) and y2(t) without >> > > solving the system of equations. >> >> > > Does there exist a Sage-construct equivalent to the Maple-construct >> > > given above? >> >> So, I guess it is different fromhttp://www.sagemath.org/doc/tut/node14.html >> >> Cheers, >> Simon > > > --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
