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solve-the-d-e-y-xe-2x-y-cos-3x-




Question Number 38455 by maxmathsup by imad last updated on 25/Jun/18
solve the d.e  y^′  −xe^(−2x) y =cos(3x)
$${solve}\:{the}\:{d}.{e}\:\:{y}^{'} \:−{xe}^{−\mathrm{2}{x}} {y}\:={cos}\left(\mathrm{3}{x}\right) \\ $$

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