Solving Coupled ODE's with Runge Kutta.

3 次查看（过去 30 天）
Oliver Bradley
Oliver Bradley 2018-3-22
回答： James Tursa 2018-3-22
I want to solve a second order ODE of the form y''=Ey. To do this I've written my own Runge-Kutta function, which applies the 4th order Runge Kutta method to a function'f', defined using a function handle. To do this I have separated the ODE to a coupled first order system: y'=v, v'=Ey. However, I can't think of a way to input this coupled system with function handles. Is there a way to do this?

请先登录，再回答此问题。

回答（1 个）

James Tursa
James Tursa 2018-3-22
Do it the same way the examples for ode45 do it in the doc. Let your state vector be two elements with
y(1) = your original y
y(2) = your original v
Then you can have a function handle as follows:
dy = @(y) [y(2);E*y(1)];

类别

在 Help Center 和 File Exchange 中查找有关 Runge Kutta Methods 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