Λ1 < Λ2 < 0 | P > 0, q > 0, p2 > 4q | Stable node | Y |
Λ1 > Λ2 > 0 | P < 0, q > 0, p2 > 4q | Unstable node | N |
Λ1 < 0 < Λ2 | P < 0 | Saddle point | N |
Λ1 = Λ2 < 0 | P > 0, q > 0, p2 = 4q | Stable degradation point | Y |
Λ1 = Λ2 > 0 | P < 0, q > 0, p2 = 4q | Instable degradation point | N |
Λ1,2 = |
P > 0, q > 0, p2 < 4q | Stable focus | Y |
Λ1,2 = |
P < 0, q > 0, p2 < 4q | Unstable focus | N |
Λ1,2 = |
P = 0, q > 0 | Center | N |