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設f(x)=|x²-4|，求f'(2)=？284Please respect copyright.ＰＥＮＡＮＡQnn5heTFEM
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我會不會下手重了點www 不太老少咸宜284Please respect copyright.ＰＥＮＡＮＡzSRbIrQPFS
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但這題的答案蠻簡單的284Please respect copyright.ＰＥＮＡＮＡwhD2n5O8Gz
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