Solving Derivation Problem of Power Exponential Function of N Variables from the Point of View of the Function of Many Variables;
对幂指函数的求导法则做了进一步推广，并给出了相应的求导举例。
Seeking the maximum and minimum of function is the perpetual topic in the medium-sized mathematics, and the function of many variables are difficulties.
求最值问题是中等数学永恒的话题，其中，多元函数求最值是难点。
Necessary and sufficient conditions are given on the symmetry of points and n-1 dimensional hyperplane of function of many variables in then-dimensional Euclidean space.
在n维欧氏空间内，给出了多元函数分别关于点、n-1维超平面对称的充要条件。
Limiting the maximum number of live variables: this is typically achieved by keeping expressions simple and small, and not using too many variables in a function.
限制活变量的最大数目：通常可以使用简单小巧的表达式，在函数内部不使用太多的变量。
In fact, if you had a function of many more variables the criterion would still look exactly like that.
事实上，如果你有一个多变量函数，那么它的准则依然如此。
In the paper, it provides the geometrical solution to extreme value of many variables function by geometric properties of objective function or constraint condition.
本文中，利用目标函数或约束条件的几何性质，提供了某些多元函数极值或最值问题的几何解法。
This paper is to discuss the higher-order derivative of many-variables abstract composite function, and to put forward the easy method to this type of questions through substitution.
对多元抽象复合函数的高阶求导进行了讨论，利用代换的思想，得到了对其进行高阶求导的简便易行的方法。
This paper is to discuss the higher-order derivative of many-variables abstract composite function, and to put forward the easy method to this type of questions through substitution.
对多元抽象复合函数的高阶求导进行了讨论，利用代换的思想，得到了对其进行高阶求导的简便易行的方法。
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