Thanks for answer. Yes, I did. I found similar question but it was about rsolve and second order relation. I am looking for rsolve or similar solver in context of several variables ( ei. a(n), b(n) in example above and 4 variables in my case I want to solve).
I have read this: http://groups.google.com/group/sage-support/browse_thread/thread/a58be337b75af4b6/22d16a9f0fef5d72?lnk=gst&q=recurrence#22d16a9f0fef5d72 and this: http://groups.google.com/group/sage-support/browse_thread/thread/6f194a6c01fdb97d/8ecbfcb7361ba5e9?lnk=gst&q=recurrence#8ecbfcb7361ba5e9 On Mar 13, 2:59 pm, David Joyner <[email protected]> wrote: > I think it is in sympy (included in Sage). > > I vaguely remember the question has been asked before on > this list but I don't remember the exact answer. Did you look through the > sage-support archive? > > > > > > > > On Tue, Mar 13, 2012 at 9:35 AM, Kakaz <[email protected]> wrote: > > Of course it should be: > > a(n+1) = A*a(n) + B*b(n) > > b(n+1) = C*a(n) + D*b(n) > > > On Mar 13, 2:32 pm, Kakaz <[email protected]> wrote: > >> Hi all! > >> I would like to ask - is there possibility in Sage ( or Maxima) to > >> solve first order recurrence relation given by linear system with > >> several variables? > >> For example: > > >> a(n+1) = A*a(n) + B*b(n) > >> b(n) = C*a(n) + D*b(n) > > >> Have I find solution of linear system at first an then solve > >> "separated" relation or is there a possibility to solve such system > >> directly? As far as I know - rsolve from sympy - takes only one > >> relation as argument. > > >> Actually I have such system with 4-variables and rational - constant > >> - coefficients ... > >> Thanks! > >> Kazek Kurz > > > -- > > 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 > > athttp://groups.google.com/group/sage-support > > URL:http://www.sagemath.org -- 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/sage-support URL: http://www.sagemath.org
