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y= x^(e^x)(1) lny=e^x lnx(2)//:對(1)兩邊取對數 y'/y = e^x(lnx + 1/x)(3)//:(2)兩邊對x求導 y' = x^(e^x)e^x(lnx + 1/x)(4)//:最後結果
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