–14 find the general solution of the given second-order differential equation

–14 find the general solution of the given second-order differential equation
In Problems 1 –14 find the general solution of the given second-order differential equation.
1. 4y” + y’ = 0 2. y” – 36y = 0
3. y” – y’ – 6y = 0 4. y” – 3y’ + 2y = 0
5. y” + 8y’ + 16y = 0 6. y” – 10y’ + 25y = 0
7. 12y” – 5y’ – 2y = 0 8. y” + 4y’ – y = 0
9. y” + 9y = 0 10. 3y” + y = 0
11. y” – 4y’ + 5y = 0 12. 2y” + 2y’ + y = 0

13. 3y” + 2y’ + y = 0 14. 2y” – 3y’ + 4y = 0