二元函数极限的求法

The Methods for Finding the Limit of Two Variables Functions

二元函数极限的存在性及其求法是高等数学的重点内容之一。相对于一元函数的极限,二元函数的极限存在性的判定以及求解具有一定的难度,通过典型例题总结归纳计算二元函数极限常用的方法以及易犯的错误。

The existence and the calculation method of the limit of two variables functions are one of important and difficult content in the higher mathematics.Relative to the limit of single variable function,there is certain difficulty to judge the existence and to find the solution of the limit of two variables function.The paper summarizes the common methods and pitfalls in the calculation of the liit of two variables functions.