4.兩個函數(shù)的和.差.積的求導(dǎo)法則 法則1:兩個函數(shù)的和的導(dǎo)數(shù),等于這兩個函數(shù)的導(dǎo)數(shù)的和. 即: ( 法則2:兩個函數(shù)的積的導(dǎo)數(shù),等于第一個函數(shù)的導(dǎo)數(shù)乘以第二個函數(shù),加上第一個 函數(shù)乘以第二個函數(shù)的導(dǎo)數(shù).即: 若C為常數(shù),則.即常數(shù)與函數(shù)的積的導(dǎo)數(shù)等于常數(shù)乘以函數(shù)的導(dǎo)數(shù): 法則3:兩個函數(shù)的商的導(dǎo)數(shù).等于分子的導(dǎo)數(shù)與分母的積.減去分母的導(dǎo)數(shù)與分子的積.再除以分母的平方:`=(v0). 形如y=f的函數(shù)稱為復(fù)合函數(shù).復(fù)合函數(shù)求導(dǎo)步驟:分解--求導(dǎo)--回代.法則:y'|= y'| ·u'| 導(dǎo)數(shù)應(yīng)用 知識清單 查看更多

 

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函數(shù)的和、差、積、商的求導(dǎo)法則

(1)法則1:兩個函數(shù)的和(或差)的導(dǎo)數(shù),等于這兩個函數(shù)的導(dǎo)數(shù)的和(或差),即:_________.

(2)法則2:兩個函數(shù)的積的導(dǎo)數(shù),等于第一個函數(shù)的導(dǎo)數(shù)乘以第二個函數(shù)加上第一個函數(shù)乘以第二個函數(shù)的導(dǎo)數(shù),即:_________.

(3)常數(shù)與函數(shù)的積的導(dǎo)數(shù)等于常數(shù)乘以函數(shù)的導(dǎo)數(shù),即:_________.

(4)法則3:兩個函數(shù)的商的導(dǎo)數(shù),等于分子的導(dǎo)數(shù)與分母的積,減去分母的導(dǎo)數(shù)與分子的積,再除以分母的平方,即:_________.

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