So, there is another way to plot the functions of two variables.
还有另外的一种方法画出二元函数的图像。
So, we are going to focus on the case of functions of two variables.
我们将把注意力集中在二元函数上。
And we have seen them twice. We have seen them once for functions of two variables, once for functions of three variables.
并且我们已经做过两次了，一次是关于二元函数的，另一次关于三元函数的。
This paper gives several determined value rules to type of indeterminate forms of functions of two variables. These contain the first order and the second order decision rules of the limit.
给出二元函数型来定式的各种值法则，包括一阶极限判定法则和二阶极限判定法则。
We have learned how to think of functions of two or three variables in terms of plotting them.
我们已经知道，怎样通过图像去了解二元和三元函数。
In thermodynamics we usually deal with functions of two or more variables.
在热力学中，我们经常涉及两个或更多变量的函数。
Two-dimensional flow was dealt with using the method of functions of complex variables.
运用复变函数论方法处理了二维流动。
By using the limits of functions and the exchange limit theorem, we considered the relationship between the double limit of function with two variables and its repeated limits.
应用函数列的极限与函数的极限交换次序定理，研究了二元函数的二重极限与它的两个累次极限的关系定理，研究了二元函数的两个二阶混合偏导数可交换次序定理。
By using the limits of functions and the exchange limit theorem, we considered the relationship between the double limit of function with two variables and its repeated limits.
应用函数列的极限与函数的极限交换次序定理，研究了二元函数的二重极限与它的两个累次极限的关系定理，研究了二元函数的两个二阶混合偏导数可交换次序定理。
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