$\begin{array}{l}a=0.1\\ b=0.2\\ c=0.1\end{array}$

$\begin{array}{l}{x}_{12}=\frac{-0.2\pm \sqrt{-0.76}}{4}\\ x_{21}=\frac{-0.2\pm \sqrt{-0.76}}{4}\end{array}$

−0.05

−0.05

0.168

−1.07

Spiral

Spiral

Saddle

Spiral

Asymptotically stable

Asymptotically stable

Unstable

Stable

$\begin{array}{l}a=0.6\\ b=0.3\\ c=0.5\end{array}$

$\begin{array}{l}{x}_{12}=\frac{-0.2\pm \sqrt{-4.71}}{4}\\ x_{21}=\frac{-0.2\pm \sqrt{4.71}}{4}\end{array}$

−0.0075

−0.0075

0.468

−0.618

Spiral

Spiral

Saddle

Spiral

Asymptotically stable

Asymptotically stable

Unstable

Stable

$\begin{array}{l}a=0.01\\ b=0.02\\ c=0.03\end{array}$

$\begin{array}{l}{x}_{12}=\frac{-0.2\pm \sqrt{-0.0796}}{4}\\ x_{21}=\frac{-0.2\pm \sqrt{0.0796}}{4}\end{array}$

−0.02

−0.02

0.066

−0.076

Spiral

Spiral

Saddle

Spiral

Asymptotically stable

Asymptotically stable

Unstable

Stable

$\begin{array}{l}a=0.2\\ b=0.2\\ c=0.03\end{array}$

$\begin{array}{l}{x}_{12}=\frac{-0.2\pm \sqrt{-1.56}}{4}\\ x_{21}=\frac{-0.2\pm \sqrt{1.56}}{4}\end{array}$

−0.2

−0.2

0.262

−0.362

Spiral

Spiral

Saddle

Spiral

Asymptotically stable

Asymptotically stable

Unstable

Stable