Solve Difference Equations symbolically

7 次查看（过去 30 天）
Amr Younis
Amr Younis 2017-2-13
编辑： Soham Chatterjee 2019-7-18
Hello, how to solve difference equations symbolically?
in another application called Maxima, there is a function called solve_rec

请先登录，再回答此问题。

采纳的回答

Amr Younis
Amr Younis 2017-2-13
编辑：Amr Younis 2017-2-13
i think i found the answer: the solver is a MuPad one:
syms y(n);
y(n)=evalin(symengine,'solve(rec(y(n)=y(n-1)+y(n-2),y(n),y(0)=0,y(1)=1}))');
double(y(7))

更多回答（1 个）

Karan Gill
Karan Gill 2017-2-13
编辑：Karan Gill 2017-10-17
Use dsolve: https://www.mathworks.com/help/symbolic/dsolve.html. There's no need to use MuPAD.
  1 个评论
Soham Chatterjee
Soham Chatterjee 2019-7-18
编辑：Soham Chatterjee 2019-7-18
The answer you have given will only work for differential equations, if I am not wrong. But I need the solution for a difference equation, can you please help me out.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Numeric Solvers 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by