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I. (a) Find the general complex solution for the following homogeneous equation: y-y + 81/ + 10y = 0. (One root of the characteristic polynomial is λ| =-1.) Your solution must have three (complex) integration constants. (b) Because the coefficients of the equation are real, it makes sense to ask what is the most general real solution. Obtain it by separating the real part of the solution you found in (a). Your result must have three real integration constants 2. (a), (b) Same two questions as in Problem 1 but for the 4-th order equation (There must now be four integration constants.)

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