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設f(x)=|x²-4|，求f'(2)=？255Please respect copyright.ＰＥＮＡＮＡOvaYjx27qy
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我會不會下手重了點www 不太老少咸宜255Please respect copyright.ＰＥＮＡＮＡfJ3iE8t7AQ
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但這題的答案蠻簡單的255Please respect copyright.ＰＥＮＡＮＡlMl5prJs0J
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