在微积分中，在函数的极小值点上导数等于零或者不存在导数。
In calculus, the derivative equals zero or does not exist at a function's minimum point.
在微积分中，在函数的极小值点上导数等于零或者不存在导数。
On the Uniqueness of Meromorphic Functions and its Derivative Share Values;
在局部连通集上定义了连通b -凸函数；在关于弧的右上导数的基础上，定义了连通- B伪凸，连通b -拟凸函数，推广了B -凸函数。
Then it expands the B-vex functions by defining connected pseudo B-vex and connected quasi B-vex functions in terms of right upper derivative with respect to an arc.
基本上，答案就是，我们不可以用二次导数来验证这个情况。
Basically, the answer for us is that we don't have a second derivative test in this situation.
基本上是的，那就是方向导数。
And that's basically, yes, that's the directional derivative.
事实上，这个方程给出的是，u对t的偏导数。
And, in fact, what the equation will give us is the derivative of u with respect to t.
在此基础上提出了基于布尔偏导数的组合电路双故障检测的新方法。
Then, a new method testing the double fault of combinational circuits based upon Boolean partial derivative is proposed.
在此基础上，进一步探讨了同时含有状态摄动和状态导数摄动的不确定非线性系统的鲁棒性能准则设计问题。
Then the performance criteria design is discussed for a class of nonlinear uncertain systems with state perturbations and state's derivative perturbations as well.
考察了除环上的l多项式的左因式、左根与左倍式的性质，给出了导数与左结矩阵的应用。
Left factors, left multiples and left roots of the polynomials over sfield are studed. Applications of derivative and left relative matrices are given.
用奇点分布法计算浮体在波浪上的运动需要多次计算自由水面格林函数及其导数。
The analysis of interaction between waves and floating bodies by singularity distribution method involves a great number of estimations for the Green Function with surface and its derivatives.
它在二维三次卷积插值法的基础上利用三次样条插值法的插值函数具有三阶连续导数的性质而得来的。
It is acquired from that it makes use of that the interpolation function of cubic spline interpolation has a continuous third derivative on the base of two-dementional cubic convolution interpolation.
这些公式使得这些点子上的导数近似式是非对称形式。
These formulas make the approximations for the derivatives at these points in a nonsymmetrical manner.
另一种是在未解出导数的一阶方程中，在拉格朗日方程、克策洛方程解法的基础上更加广泛的推广。
In unsolved derivative first-order differential equations, this paper is based on Lagrange equation and Clairaut equation, and popularizes them.
本文介绍了用系数倍率导数光谱法同时测定黄棕色涤纶上的分散黄rgfl、分散棕2rl、分散红s -BWFL的配比。
The determination of Disperse Yellow RGFL, Disperse Brown 2rl and Disperse red S-BWFL on coloured Dacron fibres by coefficient multiple derivative spectrophotometry is described.
本文在经典力学的基础上，提出求解动点作平面复合运动的直接矢量导数方法和矩阵方法的定型公式。
On the basis of classical mechanics, the author derived a series of typical vector and matrix formulas for solving the problems of a particle that takes part in plane complex movements.
在三角形域上构造对边界曲线和跨界导数插值的三角曲面是计算机辅助几何设计和计算机图形学等领域中的基本问题。
Constructing triangle surface which interpolates the boundary curve and cross-boundary slopes on a triangle is the basic problem in computer aided geometric design, computer graphics and so on.
文中给出放大器的速率方程组的解，并在此基础上导出理想放大器的前三阶导数的解析表达式。
By finding out the solutions to the rate equations of the amplifiers, the analytical expressions of the derivatives, up to the third order, of Pout with respect to Pin have been deduced.
在特征集的基础上，讨论了其参数导数的构成情况，用有限个点和函数表示了无穷个参数导数的情形。
Based on characteristic set, the case of infinity parameters is described by using of finite value and functions.
在方向图和脊线频率的基础上，实现了基于二阶导数的指纹图像二值化算法；
We also improve on the binarization method of fingerprint images based on the 2~(nd) derivative by the orientation and ridge frequency of the images.
在一元函数广义导数定义的基础上，提出了多元函数广义偏导数的概念，相应地建立了广义偏导数的运算规则，获得了有关的一些性质。
Concept and operation rules of generalized partial derivative of multivariate function are given basis on generalized derivative of single variable function in this paper.
本文对线性空间中的凸集上的实值函数定义一种导数，用其研究函数凸性，得到了上述三种凸函数的若干判定定理。
This paper defines a kind of derivative for real function on convex set which is in linear space. By means of the derivative we study convexity of function and obtain some decision theories.
弦截法在牛顿法的基础上，利用差商来回避导数值的计算。本文推导了牛顿迭代法的各种改进方法。
On the basis of Newton method, Secant method used the difference quotient instead of calculating the value of derivative. his thesis derives improvements of Newton method.
本文在灰函数和灰极限的基础上，给出了灰函数的导数(或灰导数)的定义，并研究了简单灰函数导数。
Based on grey function and grey limit, this paper gives definition to derivate of grey function (or to grey derivate) and studies the derivate of simple grey function.
对于一般的非凸函数，其方向导数不具备任何凸性，可以利用一般正齐次函数的回收函数来给出它的一个上凸近似。
We research on describing preinvexity of functions in this paper by means of the density and weakly near convexity in the set.
本文在泛灰函数的极限概念基础上，进一步讨论了泛灰函数极限的运算及运算性质，为讨论泛灰函数的连续性以及泛灰函数的导数奠定了基础。
Some definitions of four fundamental operations of grey number and grey function are given in this paper, also we have given the whiting method of grey function.
本文在泛灰函数的极限概念基础上，进一步讨论了泛灰函数极限的运算及运算性质，为讨论泛灰函数的连续性以及泛灰函数的导数奠定了基础。
Some definitions of four fundamental operations of grey number and grey function are given in this paper, also we have given the whiting method of grey function.
应用推荐