函數(shù)的和、差、積、商的求導法則

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

(2)法則2:兩個函數(shù)的積的導數(shù),等于第一個函數(shù)的導數(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)的導數(shù),即:_________.

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

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

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函數(shù)和差積商的導數(shù)及復合函數(shù)的導數(shù)?

       (1)(u±v)′=     ;?

       (2)(uv)′=     ;?

       (3)()′=     ;?

       (4)設函數(shù)u=φ(x)在點x處有導數(shù)ux′=φ′(x),函數(shù)y=在點x的對應點u處有導數(shù)yu′=,則復合函數(shù)y=f[φ(x)]在點x處有導數(shù)且yx′=     .

      

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