What actually needs to be done? On Wed, Sep 14, 2011 at 3:31 PM, David Joyner <[email protected]> wrote: > Hi all: > > Just a little reminder: there is a trac item in Sage detailing with > the upgrade of > Sympy to 0.7.1 (from 0.6.4). I think almost anyone on this email list with > sufficient interest could do this review: > http://trac.sagemath.org/sage_trac/ticket/11560. > It would be great if someone could find the time to do this. > I have agree to write a review of a CAS for a December publication, > and resolving this ticket would help a lot for examples I could give > that mention Sympy. (I am thinking now it would possibly be on Sage > but mention Sympy in some examples.) > > I'd also like to say that, thanks to the improvements to the > Sympy 0.7.1 modules for dsolve (mostly due to Aaron Meurer), > some DEs are solved by Sympy better than by Maxima - > very useful for my day-to-day teaching!
I wrote the initial ODE module, which was first included in 0.6.6, but not much has changed since then. But I guess the most recent Sage version is 0.6.4. Anyway, I haven't really done much work on it since then :) I did notice at the time, though, that it was more powerful that Maxima (or any other open source CAS that I knew of). For example, no other open source system (or at least not Maxima) to my memory bothered to implement the general nth order case for variation of parameters. Also, I don't think things like first order ODEs with homogeneous coefficients are implemented in Maxima, if I remember correctly. Anyway, I'm glad to hear that it's been useful to you. By the way, do you find the hint manager useful for teaching? That was one of the motivations of implementing it, that it would be easy to teach, e.g., the Bernoulli method and call dsolve(ode, f(x), 'Bernoulli') or dsolve(ode, f(x), 'Bernoulli_Integral'), and it would be very instructive, as the output would look exactly like it would if you used that method by hand (especially the Integral output). Aaron Meurer > > Thanks in advance for your time and consideration. > > - David > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/sympy?hl=en. > > -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
