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local/global extremum
local 和 global 是修饰极值的常见形容词。
The function has a local extremum at x = 2.
该函数在 x=2 处有一个局部极值。
极值
先理解核心含义，再看它在真实句子里的用法。
极值
the point that lies farthest from the middle of something
The function has a local extremum at x = 2.
该函数在 x=2 处有一个局部极值。
最大值或最小值的点或值
A point, or value that is a maximum or a minimum.
距离某物中心最远的点
the point located farthest from the middle of something
可能的最极端数量或值
the most extreme possible amount or value
On the graph, the extremum is the point where the line stops rising and begins to fall.
在图表上，极值就是线条停止上升并开始下降的那个点。
The extrema of the temperature readings were 12°C and 34°C.
温度读数的极大值和极小值分别为12摄氏度和34摄氏度。
In this dataset, the extremum is the value farthest from the average.
在这个数据集中，极值是离平均值最远的那个数值。
local 和 global 是修饰极值的常见形容词。
The function has a local extremum at x = 2.
该函数在 x=2 处有一个局部极值。
We need to find the extremum of this curve.
我们需要找到这条曲线的极值。
常用动词 attain 表示取得极值。
The function attains an extremum at the critical point.
该函数在临界点处取得极值。
Not this
This point is extremum.
Use this
This point is an extremum.
“extremum”是名词，不能直接作表语，前面需要加不定冠词“an”。
Not this
The function has several extremums.
Use this
The function has several extrema.
“extremum”的复数形式是“extrema”，而非规则加-s。
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页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.