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設f(x)=|x²-4|，求f'(2)=？236Please respect copyright.ＰＥＮＡＮＡUEFCF6tNel
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我會不會下手重了點www 不太老少咸宜236Please respect copyright.ＰＥＮＡＮＡyELm9pBVqz
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但這題的答案蠻簡單的236Please respect copyright.ＰＥＮＡＮＡuYRL0IPZMn
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