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solve-by-the-complex-method-y-iv-3y-3-2y-2-3sin2x-y-2-a-2-y-e-x-cosecx-




Question Number 67762 by ugwu Kingsley last updated on 31/Aug/19
solve by the complex method      y^(iv) +3y^3 +2y^2 =−3sin2x        y^2 +a^2 y=e^x cosecx
$${solve}\:{by}\:{the}\:{complex}\:{method} \\ $$$$ \\ $$$$ \\ $$$${y}^{{iv}} +\mathrm{3}{y}^{\mathrm{3}} +\mathrm{2}{y}^{\mathrm{2}} =−\mathrm{3}{sin}\mathrm{2}{x} \\ $$$$ \\ $$$$ \\ $$$$ \\ $$$${y}^{\mathrm{2}} +{a}^{\mathrm{2}} {y}={e}^{{x}} {cosecx} \\ $$

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