临界点、驻点、拐点、鞍点 ... - 知乎专栏
https://zhuanlan.zhihu.com/p/117224925驻点 (stationary point) 是指的 情况下的临界点,看驻点的定义: 之所以翻译成 驻点 (stationary point) 我想应该是正因为这一点导数为0, 微小的 x 变化并不带来 y 的变化,所以叫 stationary point,翻译成驻点也合理。 拐点 inflection point inflect 本身就有弯曲、改变的意思。 最近大家都在讲的‘拐点’,英文也可以是 inflection、 flex。 拐点(Inflection point)或称反曲点,是一条 …
Stationary point - Wikipedia
https://en.wikipedia.org/wiki/Stationary_pointA turning point is a point at which the derivative changes sign. A turning point may be either a relative maximum or a relative minimum (also known as local minimum and maximum). If the function is differentiable, then a turning point is a stationary point; however not all stationary points are turning points. If the function is twice differentiable, the stationary points that are not turning points are horizontal inflection points. For example, the function has a stationary point at …