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yaro99

  • 3 years ago

Steady state solution 4y''+12y'+9y=225-75sin(3t) I'm not sure what to do about the 225, I'd be able to solve it if it was just the sine term on the right.

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  1. TuringTest
    • 3 years ago
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    Just add another constant in your guess for the particular if you are using undefined variables.

  2. yaro99
    • 3 years ago
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    So it would be in the form \[K+a*\cos(3t)+b*\sin(3t)\]?

  3. TuringTest
    • 3 years ago
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    right

  4. yaro99
    • 3 years ago
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    Cool, I got the solution. Thanks!

  5. TuringTest
    • 3 years ago
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    welcome :D

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