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設f(x)=|x²-4|，求f'(2)=？338Please respect copyright.ＰＥＮＡＮＡ0pucsCcZgL
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我會不會下手重了點www 不太老少咸宜338Please respect copyright.ＰＥＮＡＮＡ47kEzvjB3W
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但這題的答案蠻簡單的338Please respect copyright.ＰＥＮＡＮＡN0I58BVFfC
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