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AdequateDisclosureBest ResponseYou've already chosen the best response.0
you sure this is the given?
 2 years ago

nikita2Best ResponseYou've already chosen the best response.0
http://www.wolframalpha.com/input/?i=xy%27%27%2B2y%27%2Bxy%3D0
 2 years ago

nikvistBest ResponseYou've already chosen the best response.0
\[xy''+2y'+xy=0\]\[(xy)'=y+xy'\]\[(xy)''=(y+xy')'=y'+y'+xy''=2y'+xy''\] \[(xy)''+xy=0\quad,\quad z=xy\quad,\quad z''+z=0\]\[z=C_1\cos{x}+C_2\sin{x}\quad\Rightarrow\quad y=\frac{z}{x}=\frac{C_1\cos{x}+C_2\sin{x}}{x}\]
 2 years ago
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