求解二元函数极限不存在性问题的方法  

The Determination Methods for Solving the Nonexistence of Binary Function's Limit Problems

作　　者：米永强 张峰 

机构地区：[1]银川市第二中学数学教研室,宁夏银川750004 [2]延安中学数学教研室,陕西延安716000

出　　处：《宁夏师范学院学报》2016年第6期114-116,共3页Journal of Ningxia Normal University

摘　　要：针对二元函数极限不存在性的问题,结合不同类型的函数,给出了求解该问题的三种方法,它们分别是运算法则法,极限值不一致法和倒数反推法.最后,应用其求解了一些具体的二元函数极限不存在性问题.Aim for solving the nonexistence of binary function＇ s limit problems,in this paper,we give three determination methods of solving this problem according to different types of function. Specifically,it is the determination methods of the operation rules,different limit value and reciprocal rules. Finally,some specific problems about the nonexistence of binary function＇ s limit are solved by using these methods.

关 键 词：二元函数 极限 不存在性 判定方法 

分 类 号：G633.6[文化科学—教育学]