Generalization of cobweb model

摘要

On the basis of the existing cobweb model, the cobweb model is further extended for four times, and the stability solution of four innovative strategies is emphatically introduced. The first three models broaden the scope, while the last one narrows the scope. Through the changed supply and demand function under different circumstances, the problems under different backgrounds are solved, and then the stable equilibrium conditions are solved and proved according to formula calculation and theoretical reasoning. Finally, the national pork price and total output from 2010 to 2019 were analyzed to further explain the impact of the epidemic situation in 2020 on pork prices.