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Streszczenie

We study an extended Solow–Swan model for capital, denoted by $K$, and natural resources, denoted by $N$. We are interested in production, denoted by $Y$, expressed by a simplification of the Cobb–Douglas function $Y=f(K,L,A)$ with $L=A=1$. We study the model described by the following system of ODEs: $$\begin {cases} \dot {K}=s K^\alpha -\delta K,\\ \dot {N}=rN\left (\frac {N}{\mathsf {CT}}-1\right )\left (1-\frac {N}{\mathsf {CC}}\right )-\gamma _0 K^{\alpha n}. \end {cases}$$ We study the asymptotics of solutions; among other things, we find critical points, determine their stability and find their attraction basins. This article was inspired by [M. Kornafel, I. Telega, Int. J. Sustainable Economy 12 (2020), 1–24].