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    Solve a 2nd order ODE.

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    y'' + 9y = -18sin(3t)

    © BrainMass Inc. brainmass.com October 9, 2019, 4:16 pm ad1c9bdddf
    https://brainmass.com/math/numerical-analysis/solve-a-2nd-order-ode-27326

    Solution Preview

    Because this is a linear ODE with constant coeffs, then we can guess yp as follow:

    yp= Acos(3t)+ Bsin(3t)

    However, if we look ...

    Solution Summary

    A 2nd order ODE is solved. The solution is detailed.

    $2.19