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**Final Exam / FE-P2**

« **on:**December 14, 2018, 07:52:36 AM »

**Typed solutions only. No uploads**

Find the general solution by method of the undetermined coefficients:

\begin{equation*}

y'''-3y''+4y'- 2y= 20\cosh(t)+20\cos(t);

\end{equation*}

*Hint:*All roots are integers (or complex integers).