the rate of change of f(x) is least at x=?
the rate of change of f(x) is least at x=?
答案說f'(x) is least at the point of inflection point of the curve這個怎么理解?答案把rate of change默認(rèn)為了instantaneous rate of change所以才直接說f'(x)?還有拐點不是和二階導(dǎo)數(shù)有關(guān)嗎?和一階導(dǎo)數(shù)有什么關(guān)系?
答案說f'(x) is least at the point of inflection point of the curve這個怎么理解?答案把rate of change默認(rèn)為了instantaneous rate of change所以才直接說f'(x)?還有拐點不是和二階導(dǎo)數(shù)有關(guān)嗎?和一階導(dǎo)數(shù)有什么關(guān)系?
數(shù)學(xué)人氣:885 ℃時間:2020-03-31 07:39:08
優(yōu)質(zhì)解答
x點為導(dǎo)數(shù)值最低的點,f(x)的二階導(dǎo)數(shù)在x點為0,如果x點存在二階導(dǎo)數(shù)二階導(dǎo)數(shù)為零,意味著這個點是拐點對嗎?那拐點為什么能說明這個點的導(dǎo)數(shù)值最低?導(dǎo)數(shù)值有極小值點只是f()為拐點的一種情況,充分非必要,不能反過來,你可以把所有的情形都畫出來,這樣就明了??????????????С???????f(x)=x^3
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