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複合函數的概念:一般地,對於兩個函數y=f(u)和u=g(x),如果通過變數u,y可以表示成x的函數,那麼稱這個函數為函數y=f(u)和u=g(x)的複合函數,記做y=f(g(x)).複合函數的導數:複合函數y=f(g(x))的導數和函數y=f(u),u=g(x)…
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