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词汇 Maximum point
分类 英语词汇 英语翻译词典
释义

Maximum point

原声例句
雅思写作备考指南

You want to make sure you're getting maximum points for your coherence and cohesion, so an outline is very important.

你得确保在连贯和衔接上得最高分,所以提纲非常重要。

Engvid超级外教Alex-课程合辑

So, " to crane your neck" is to stretch it almost to the maximum point, and she's spying on her neighbours.

所以,“伸长脖子” 就是几乎把它伸到最大, 她在监视她的邻居。

中文百科

驻点 Stationary point

(重定向自Maximum point)
y = x + sin(2x) 的图像
驻点(红色)与拐点(蓝色),这图像的驻点都是局部极大值或局部极小值。
y = x3 的图像  原点(0,0)是驻点,但不是局部极值。

在微积分,驻点Stationary Point)又称为临界点Critical Point)或平稳点,即函数在该点的一阶导数为零,也就是说若 p 为临界点/驻点则

在这一点,函数的输出值停止增加或减少。

对于一维函数的图像,驻点的切线平行于x轴。对于二维函数的图像,驻点的切平面平行于xy平面。

值得注意的是,一个函数的驻点不一定是这个函数的极值点(考虑到这一点左右一阶导数符号不改变的情况);反过来,在某设置区域内,一个函数的极值点也不一定是这个函数的驻点(考虑到边界条件)。

英语百科

Stationary point 驻点

(重定向自Maximum point)
The stationary points are the red circles. In this graph, they are all relative maxima or relative minima. The blue squares are inflection points.
A graph in which local extrema and global extrema have been labeled.
Saddle points (stationary points that are neither local maxima nor minima: they are inflection points. The left is a
The roots, turning points, stationary points, inflection point and concavity of a cubic polynomial x³ - 3x² - 144x + 432 (black line) and its first and second derivatives (red and blue).
Not to be confused with a fixed point where x = f(x).

In mathematics, particularly in calculus, a stationary point or critical point of a differentiable function of one variable is a point of the domain of the function where the derivative is zero (equivalently, the slope of the graph at that point is zero). Informally, it is a point where the function "stops" increasing or decreasing (hence the name).

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