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###### EXERCISES 4.3In Problems 1~14 find the general solution of the given second-order diflerential equation. 1, 4y" +y =0 2. 36y 3.Y Ey 6y = 0 4. y' 3y' + 2y = 0 5.y" + 8y' + I6y = 0 6. y IOy + 2Sy7.12y" Sy'Zy = 08. y" + 4y9.y" + 9y = 010. 3v11. }"4y' + Sy = 012. 2y' + 2y T y13. 3y" + 2y' +y = 014.-2y" Jy' + 4

EXERCISES 4.3 In Problems 1~14 find the general solution of the given second-order diflerential equation. 1, 4y" +y =0 2. 36y 3.Y Ey 6y = 0 4. y' 3y' + 2y = 0 5.y" + 8y' + I6y = 0 6. y IOy + 2Sy 7.12y" Sy' Zy = 0 8. y" + 4y 9.y" + 9y = 0 10. 3v 11. }" 4y' + Sy = 0 12. 2y' + 2y T y 13. 3y" + 2y' +y = 0 14.-2y" Jy' + 4

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