积分的应用范围非常广泛，积分在经济管理的定量分析中起着十分重要的作用。本文从三个方面，举例说明积分在经济问题中的简单应用。%The application scope of integration is very extensive, and the integration plays a very important role in the quantitative analysis of economic management. This paper from three aspects, illustrates the simple application of integration in economic problems.
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