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 <kazimierz.k...@gmail.com> 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
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