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今天小编为大家带来Mathematicad求偏导以及多元函数求极值。欢迎您的用心访问！
本期推文阅读时常大约5分钟，请您耐心阅读。
偏导函数
前面，我们对Mathematica有了基本的认识，现在我们来学习如何使用Mathematica求偏导。
使用Mathematica求偏导，运用到的函数是D (偏导)，具体求解种类，小编已经通过表格呈现出来了，这也是我们在平时使用过程中出现频率较高的几种形式。
Previously, we have a basic understanding of Mathematica. Now let's learn how to use Mathematica to find partial derivatives.
Mathematica is used to calculate the partial derivative. The function used is d (partial derivative). The specific types of solutions have been presented in tables, which are also several forms that occur frequently in our daily use.
接下来，我们使用Mathematica进行一下简单的操作演练把！题目如下：
f=5*X X^3:对x求一阶偏导；
f=5*X X^3：对X求3阶偏导；
f=3*X X^3 X*Y 6*Y，对X，Y同时求偏导。
小编的答案如下，相信大家一定都做对了！
Next, let's use Mathematica for a simple operation drill! The topics are as follows:
F = 5 * x x ^ 3: find the first-order partial derivative of X;
F = 5 * x x ^ 3: find the third-order partial derivative of X;
F = 3 * x x ^ 3 X * y 6 * y, calculate the partial derivative of X and y at the same time.
Xiaobian's answer is as follows. I believe everyone must have done it right!
求极值
掌握了偏导的求解函数，接下来我们进行新知识的学习，求极值；求极值与我们求函数偏导是密不可分的，所以将连这两个合在一起进行学习。
求解极值我们需要用到的两个基本函数为Solve[]和D[].小编依旧使用具体数值计算来进行说明。
Master the solution function of partial derivative. Next, we learn new knowledge and find the extreme value; Finding the extreme value is inseparable from finding the partial derivative of the function, so we will combine the two together for learning.
The two basic functions we need to use to solve extreme values are solve [] and D []. The Xiaobian still uses specific numerical calculations to explain.
今天的分享就到这里了。如果您对今天的文章有独特的想法，欢迎给我们留言，让我们相约明天，祝您今天过得开心快乐！
参考资料：谷歌翻译、MATLAB软件
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