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Quiz 3 \hfill  Show your work \break
Feb 26, 2016

[10]~ 1.)  Solve $y''  - 6y' + 9y = 0$

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Answer:$\underline{~~\hskip 2in~~}$

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[10]~ 2.) 
Find a suitable form for  $\psi$ for  $y''  - 6y' + 9y = 2e^{4t}cos(8t)$ where $y = \psi(t)$  is a solution to  this differential equation for appropriate constants $A$ and $B$ if the method of undetermined coefficients is used.  You do NOT need to solve for $A$ and $B$.


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Answer:$\underline{~~\hskip 4in~~}$
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