弹性理论和蛛网理论两种数学模型的比较与选择

本通过在两个不同的坐标平面上（一个以P轴为纵轴，Q轴为横轴：一个以P轴为横轴，Q轴为纵轴）分析具有不同弹性的供需函数的几何模型和不同蛛网的几何模型，区分平面上它们的点（P、Q）运行轨迹，从两种不同的情况下，判断选择其中之一的合理性。

Comparison and Selection of Two Mathematical Models between Elasticity Theory and Cobweb Theory

This article analyses the geometrical model with different elasticity of supply and demand function and that with different cobweb on two different coordinate planes and classifying the differences of the running orbit of points (P.Q) on the plane, so as to judge and select one rationality from two different conditions.