# Ordinary Differential Equations/Homogenous 3

1) $3y''+18y'-81y=0$

2) $y''+6y'+13y=0$

3) $y''+10y'+25y=0$

4) $y''''+24y'''+218y''+838y'+1369y=0$

5) $y'''-2y''-15y'+36y=0$

6) $y'''+5y''-4y'-20y=0$

7) $y'''+4y''+y'-26y=0$