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設f(x)=|x²-4|，求f'(2)=？277Please respect copyright.ＰＥＮＡＮＡJ2b8Ck4dJ0
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我會不會下手重了點www 不太老少咸宜277Please respect copyright.ＰＥＮＡＮＡGWRQJHl9Ya
8964 copyright protection273ＰＥＮＡＮＡek8J3uZ6wy 維尼

但這題的答案蠻簡單的277Please respect copyright.ＰＥＮＡＮＡX4brHVK6Y8
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