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這樣吧 你去看看華東師範大學出版的數學分析 裏面講的很清楚一般對於證明需要你用定義來證明 導數的定義是說函數值的增量△y和自變量的增量△x之比△y/△x的極限存在 這是我們就說在這一點處f(x)可導 (我指的是某一...
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