I want to solve an ODE in Mathematica, but there is no response.
This is the code I used:
eqn = x'[y] - c + a x[y] Sin[y - y0] == 0;
sol = DSolve[eqn, x, y]
Could anyone help me? Is there another function that solves the problem?
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$\begingroup$ Hi @Sara, you should look up the documentation for the DSolve and NDSolve. reference.wolfram.com/language/ref/NDSolve.html look the basic examples and copy/adapt them ;) $\endgroup$– ivbcCommented Nov 7, 2016 at 14:51
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1 Answer
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DSolve is hanging on a definite integral with symbolic parameters. We can temporarily inactivate and reactivate Integrate, which in this case causes DSolve to return an indefinite integral that doesn't hang.
eqn = x'[y] - c + a x[y] Sin[y - y0] == 0;
Block[{Integrate = Inactive[Integrate]},
DSolve[eqn, x[y], y]
] // Activate
answered Nov 7, 2016 at 16:47
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$\begingroup$ @saranj it's an arbitrary constant. It's there because you had no initial condition. $\endgroup$ Commented Nov 8, 2016 at 13:46