That means it involves the first partial derivatives of whatever you put into it.
这意味着，不管放什么进去，都会包括一阶偏导。
So, critical points, remember, are the points where all the partial derivatives are zero.
临界点是，偏导数都为零的点。
What we would start doing immediately is taking the partial derivatives. What is f sub x?
我们首先要做的事是,求偏导数，fx是多少？
And we have learned how to package partial derivatives into a vector, the gradient vector.
我们也知道了，如何将各个偏导组合成一个梯度向量。
So the unknown is a function, and the equation will relate the partial derivatives of that function to each other.
未知量是一个函数，这个方程，将把函数的偏导数联系起来。
The calculation of the partial derivatives is important in modeling IP and inversion resistivity.
在极化率正演计算和电阻率反演成像中，偏导数矩阵的计算是比较关键的问题。
Well, hopefully you kind of vaguely remember that it was about functions of several variables and their partial derivatives.
希望你们大致记得，这是关于多元函数及其偏导的。
The proposed method avoided the complicated partial derivatives in traditional method, and the computation was effectively reduced.
该算法避免了传统算法中繁琐的偏导数求解，有效降低了计算量。
Expect one about a min/max problem, something about Lagrange multipliers, something about the chain rule and something about constrained partial derivatives.
有一个极值问题，也有关于拉格朗日乘数法的，链式法则也会有的,约束条件下偏导数当然不会漏掉。
And, we'll actually learn how to compute their partial derivatives without having to do this because we'll just have the usual methods for computing derivatives.
计算偏导数的办法没这么麻烦，因为我们有常规的方法，因此我们不需要通过定义去求偏导数。
By theoretical derivation, the partial derivatives of the deviation between the humidity sensing characteristic curve and the fitting line to the self-resistance are obtained.
通过理论推导，获知了湿敏电阻器的感湿特性曲线与拟合直线之间的偏差随其本体电阻的变化关系。
The partial derivatives of the electromagnetic responses with respect to resistivity and dielectric parameter are calculated by using Green function based on reciprocity principle.
模型响应对电阻率及介电常数的偏导数用格林函数和互换原理计算。
In this paper, the extrapolation formulas of rocket engine performance parameters are established utilizing one isentropic reference line and two partial derivatives for fixed enthalpy.
本文利用一条等熵参考线和两个等焓偏导数建立了火箭发动机性能参数的外推公式。
The method can be used to obtain the change of operational effectiveness with technical performance of weapon system and the operation mode without using operations of partial derivatives.
可在不进行求导数运算的条件下，通过区间运算获得作战效能随武器装备的技术战术性能和作战使用方式改变而变化的情况。
On the basis of the advanced first order and second moment method, the partial derivatives of the failure probability to the distribution parameters of the process variables were formulated.
由求解失效概率的改进一次二阶矩法出发，给出了失效概率对中间变量分布参数偏导数的计算公式；
Evaluation relevant to the partial derivatives of the multivariable functions is often done in scientific computation, usually by means of the symbolic differentiation or the divided difference.
科学计算及其应用常常需要多变量函数的有关偏导数问题的计算，通常使用的计算方法是符号微分或差分近似。
The Relation between the Continuity, the Partial Derivatives, the Directional Derivatives and the Differentiability of a Function.
多元函数的连续性，偏导数，方向导数及可微性之间的关系。
Partial derivatives of eigenvalues and eigen vectors with respect to random variables for structures are deduced by means of the concept of mode truncation.
为求出随机特征对的方差，借助于模态截断概念推出诸特征值与特征向量对随机变量的偏导数。
Partial derivatives of eigenvalues and eigen vectors with respect to random variables for structures are deduced by means of the concept of mode truncation.
为求出随机特征对的方差，借助于模态截断概念推出诸特征值与特征向量对随机变量的偏导数。
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