How do I plot component curves for system of differential equations? I keep getting errors for this compartment model

3 次查看（过去 30 天）
Alex Vasin
Alex Vasin 2018-6-7
评论： Star Strider 2018-6-7
F=@(t,x) [-4*x(1)+4*x(2); x(1)-6*x(2)+3*x(3)+2; x(1)+2*x(2)-8*x(3)+5];
[t,x]=ode45(F,[0 3], [0 10]);
plot(t, x(:,1), t, x(:,2), t, x(:,3))

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2018-6-7
You have to supply the same number of initial conditions to the ODE solver as you have variables in your ODE equation. Assuming you only want ‘x(3)’ to have anything in it at the start, this works:
[t,x]=ode45(F,[0 3], [0 0 10]);
The rest of your code is unchanged, although you might want to add this after your plot call:
legend('C_1(t)', 'C_2(t)', 'C_3(t)', 'Location','NE')
  5 个评论
显示 3更早的评论

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Ordinary Differential Equations 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by