一道用定义证明的数学分析命题的拓广

The Proposition of Mathematical Analysis Proved through the definition

用定义证明极限是初学者正确理解掌握极限定义的手段和途径;命题的拓广丰富了《数学分析》教学的内容,同时也提供了有相当难度的习题对学生进行训练,帮助学生巩固、加深、提高和扩大所学知识。

With the definition to prove the limits ,it is right for the l^eginners to understand and grasp the definition of the limits of ways and means.The proposition extendsMathematical Analysisof teaching content, and also provides a considerable degree of difficulty of the exercise to train students to help students,help the students to consolidate, deepen, improve and enhance the learning.