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Quiz 7 Form A, 
Dec 1, 2017
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[10]~  1a.) Find the general solution to the following differential equation system.
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\centerline{${\bf X'} = \left[\matrix{
1 & -1 \cr 6 &-4
 }\right]{\bf X}$}

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\centerline{Answer: $\underline{\hskip 3in}$}
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[3]~ 1b.)  Describe the behavior of the solution as $t \rightarrow \infty$: $\underline{~~\left[\matrix{x_1 \cr x_2 }\right] \rightarrow \left[\matrix{~~~~~~ \cr ~~~~ }\right] ~~}$

[7]~ 1c.)  Sketch the phase portrait of this system (i.e. plot a few trajectories of the system).

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