3.If y (x) + py" (x) + qy" (x) +ry"(x) + sy"(x) + ky'(x) + dy(x) = f(x) where yı, 32, 33, 34 and ys are solutions of homogenous part, then obtain k₁, k2, k3, ka and k5 using variation of parameters methods where Yp(x) = k₁y₁+k2yY2+k3y3 + kaya+k5Y5

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