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Plotting system of differential equations

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Sajith Dharmasena 2015-3-24

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评论： Star Strider 2015-3-24

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Hi,

does anybody know the code to plot a system of differential equations? For example say,

x1(dot) = -x2 + (x1)^2 -(x1*x2)

x2(dot) = x1 + (x1*x2)

Thanks in advance! :)

Sajith.

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Star Strider 2015-3-24

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Yes.

Use ode45 to integrate your equations, then plot the solution.

Give it a go. It should be very easy for you to cast your system of equations as an Anonymous Function. If you have problems with your code, we can help you get it running.

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Sajith Dharmasena 2015-3-24

How do you plot x1 vs x2? (phase plane)

Star Strider 2015-3-24

在 MATLAB Online 中打开

You plot just that:

plot(x(:,1), x(:,2))

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