second derivative

基本解釋

We cannot use the second derivative test.
這里不能用二次導數(shù)來驗證。
So, what does the second derivative test say?
那么二階導數(shù)判定是怎樣的呢？
Basically, the answer for us is that we don't have a second derivative test in this situation.
基本上，答案就是,我們不可以用二次導數(shù)來驗證這個情況。

And all this is, is saying that when you take a mixed second derivative, it doesn't matter in which order you take the two derivatives.
麥克斯韋關(guān)系的本質(zhì)是,當你考慮混合的二階導數(shù)時，求導的順序不影響最后的結(jié)果,現(xiàn)在，我們利用這些關(guān)系。
麻省理工公開課 - 熱力學與動力學課程節(jié)選
What's a function, what's a derivative, what's a second derivative, how to take derivatives of elementary functions, how to do elementary integrals.
什么是函數(shù),什么是導數(shù),什么是二階導數(shù),如何對初等函數(shù)求導,如何進行初等積分
耶魯公開課 - 基礎(chǔ)物理課程節(jié)選
But, of course, we want to go all the way to distance, so we take the second derivative and we have this equation for force here.
當然我們最后想要的是距離,所以我們?nèi)《A微,分就有這個式子。
麻省理工公開課 - 化學原理課程節(jié)選

There is much to be said for connoisseurship and its second derivative huge future returns.
FORBES: Overpriced Art Versus Cheap Stocks

二階導數(shù)
Traditionally, the method of bar code recognition is based on zero crossing of the second derivative.
傳統(tǒng)的條碼識別方法是通過二階導數(shù)零交叉來定位條碼邊界。
醫(yī)藥科學
二階導數(shù)