数学作为一门基础性的学科,它的应用是广泛的,可以说它是支撑现代科学的骨架,其他的学科领域等等都是往此骨架中填充血肉.而作为一门相对年轻的学科-经济学,它也是以数学的一些基本假设、基本结论、基本方法为基础的学科.在此,主要讨论数学边际量在经济决策中的一些应用.考虑两个变量x,y以及两者间函数关系y=f(x).给定x的 As a basic subject, mathematics is widely used, it can be said that it is the skeleton that supports modern science, and other disciplines are all filled with flesh and blood in this framework.As a relatively young subject, Economics, which is also based on some basic assumptions, basic conclusions and basic methods of mathematics, discusses some applications of mathematical marginal variables in economic decision-making.Considering two variables x, y and the function between the two Relationship y = f (x). Given x