Numerical integration "backwards" for ODE45
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Amirah Algethami
on 19 Dec 2022
Commented: Amirah Algethami
on 19 Dec 2022
Hi There;
I should apply Backword integration for system of differential equation by ODE45 solver in Matlab, it seems easy for some people, I want an example to understand how to make Backword integration. your answer appreciated.
Best
AA
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Accepted Answer
Torsten
on 19 Dec 2022
fun = @(t,y) y;
tspan = [0 1];
y0 = 1;
[Tf,Yf] = ode45(fun,tspan,y0);
tspan = [1 0];
y0 = exp(1);
[Tb,Yb] = ode45(fun,tspan,y0);
plot(Tf,Yf,Tb,Yb)
More Answers (1)
Fabio Freschi
on 19 Dec 2022
you may be interested to read the comments to this post
3 Comments
Fabio Freschi
on 19 Dec 2022
@Torsten already reported an example. I still warn you to pay attention to integrate backwards because in some cases you may have numerica blowup
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