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Mathematics 17 Online
OpenStudy (anonymous):

3y''+2y'+y=0

OpenStudy (anonymous):

\[y(x)=c_1 e^{-\frac{x}{3}} \sin \left(\frac{\sqrt{2} x}{3}\right)+c_2 e^{-\frac{x}{3}} \cos \left(\frac{\sqrt{2} x}{3}\right) \]

OpenStudy (dumbcow):

For explanation: http://tutorial.math.lamar.edu/Classes/DE/ComplexRoots.aspx

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