y +2y + y = 0, you = y (o = 0 6. Verify that y₁ (t) = t is a solution of t²y" -t(t+2)y' + (t+2)y = 0 for t > 0. Use the method of reduction of order to find a second solution y2(t) of the differential equation so that {y1(t), y2(t)} is a fundamental set of solutions. 7. Use the method of undetermined coefficients to find the general solution of the linear es