Table 3
Equilibrium points stability, 
| x1 | 
| 
| 0 | β | α | 
| ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Det | + | − | − | + | + | |||||
| Tr | − | − | − | − | + | |||||
| Stability | Stable focus/node | Saddle | Saddle | Stable focus/node | Unstable focus/node |
Equilibrium points stability,
| x1 |
|
| 0 | β | α |
| ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Det | + | − | − | + | + | |||||
| Tr | − | − | − | − | + | |||||
| Stability | Stable focus/node | Saddle | Saddle | Stable focus/node | Unstable focus/node |