二重极限求法探析  

Analyze the Seeking of the Double Limit

作　　者：杨雪宏[1] 宋振新[1] 段长存[1] 

机构地区：[1]河北能源职业技术学院基础部,河北唐山063004

出　　处：《河北能源职业技术学院学报》2002年第3期94-96,共3页Journal of Hebei Energy College of Vocation and Technology

摘　　要：极限运算是数学分析中较重要的一种运算,本文通过实例论述了求二元函数极限的几种常见方法,这有助于推广到计算多元函数的极限问题。Limit operation is a relatively important operation in mathematics analysis. The article discourses upon the common methods of getting limit of dual function by living examples, which will help us to the extent of dealing with limit questions about calculating many a changed quantity function.

关 键 词：二重极限 连续 夹逼准则 变量代换 累次极限 

分 类 号：O172[理学—数学]