The question states to find the solution of the following -

I found the root, it was 3+- i

Im not too sure what to do after this, any help would be appreciated.

Thanks in advance

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- Feb 8th 2008, 01:51 PMbrd_7Some more Differential Equations
The question states to find the solution of the following -

I found the root, it was 3+- i

Im not too sure what to do after this, any help would be appreciated.

Thanks in advance - Feb 8th 2008, 04:29 PMSoroban
Hello, brd_7!

Quote:

Find the solution: .

I found the root, it was

I'm not too sure what to do after this.

Those roots give us the homogeneous solution: .

Now we must find the particular solution . . .

I conjectured that the solution is of the form: .

. . and found it to be: .

The solution is: .

- Feb 8th 2008, 05:52 PMmr fantastic
Then you need to read this.

- Feb 9th 2008, 05:26 AMbrd_7
Ok, i managed to prove it all myself.. I just didnt know what to do because of the extra '20' term on the RHS.. now i know that you just put an A to represent the constant makes it a whole lot easier. Thank you!