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Student Support Forum: 'System of First Order ODEs' topicStudent Support Forum > General > "System of First Order ODEs"

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the_wOnderer
03/13/12 12:07pm

I'm trying to solve a system of First Order ODEs.

NDSolve[{Subscript[y, 1]'[t] == Cos[Subscript[y, 3][t]],
Subscript[y, 2]'[t] == Sin[Subscript[y, 3][t]],
Subscript[y, 3]'[t] == ((
Cos[Subscript[y, 3][
t]] - (Sin[Subscript[y, 3][t]] Abs[Sin[Subscript[y, 3][t]]]))/
Subscript[y, 4][t]),
Subscript[y, 4]'[t] ==
Sin[Subscript[y, 3][
t]] - (Cos[Subscript[y, 3][t]] Abs[Cos[Subscript[y, 3][t]]]),
Subscript[y, 1][0] == Subscript[y, 2][0] == Subscript[y, 2][1] == 0,
Subscript[y, 1][1] == 0.75}, {Subscript[y, 1], Subscript[y, 2],
Subscript[y, 3], Subscript[y, 4]}, {t, 0, 1}, Method -> "Shooting"]


Can anyone tell me why the following errors occur?

Power::infy:
NDSolve::ndnum:

And also, how to go about solving this one? Thanks!

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Subject (listing for 'System of First Order ODEs')
Author Date Posted
System of First Order ODEs the_wOnderer 03/13/12 12:07pm
Re: System of First Order ODEs toen 03/16/12 00:59am
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