Determine the largest interval on which the differential equation (e - 1) y" + sin ty + cost y = 0, y (5) = 0, y (5) = 1 %3D is certain to have a unique twice differentiable solution. O 1, 00) O (1, o0) O (-00, 00) O 1-1, 00) 0(-1, o0) Question 7 Find the general solution of the following equation: y/" – 6y + 9y =0 O vG (a) = ce +gela O va (z) = edr+ cre O va (z) = ce+ re O va (u) - Ce + cy re O ya (a) - cje tge

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