How can I insert this boundary condition?

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Elia Paini
Elia Paini el 10 de Mayo de 2021
Comentada: Elia Paini el 13 de Mayo de 2021
Hi everyone, I have an ODE system with several variables, like this:
y1' = f (y1,y2)
y2' = g (y1,y2)
I'm solving it with bvp4c.
Is it possible to enter, in addition to the BCs related to y1 and y2, also a condition on the derivatives, for example y1'(0) = 0? Should I add one equation? How?
Thank you!
  6 comentarios
J. Alex Lee
J. Alex Lee el 12 de Mayo de 2021
i'm not following anymore...you seem to agree that you can't have 3 BCs on 2 first order equations because that's over-specified...if you add another first order equation that is coupled in, aren't you completely changing the problem?
Elia Paini
Elia Paini el 13 de Mayo de 2021
I'm agree with you... The problem is I can't have 3 bcs without adding another equation. I've just read the documentation, but it seems not clear about this

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