The Limit cognition has an extensive application in modern mathematics, as well as physics etc, which is determined by its inherent function of reasoning.
极限思想在现代数学乃至物理等学科中有广泛的应用，这是由它本身固有的思维功能所决定的。
As with previous editions, the emphasis is on the economic reasoning behind the formulae while introducing students to the mathematics that will enable them to pursue further reading.
与前几个版本相比，其重点是经济背后的推理公式，同时引导学生的数学，这将使他们能够谋求进一步阅读。
Firstly, this thesis gives a brief introduction of reasoning and demonstration, and bases on it, analyzes the structure as well. It is: solid basic knowledge of mathematics;
本文首先对推理论证作了概述，在此基础上分析了推理论证能力的结构：牢固的数学基础知识；
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