設f(x)=|x²-4|，求f'(2)=？346Please respect copyright.ＰＥＮＡＮＡG85M4TQwpq
我會不會下手重了點www 不太老少咸宜346Please respect copyright.ＰＥＮＡＮＡkBT7T7wHNJ
但這題的答案蠻簡單的346Please respect copyright.ＰＥＮＡＮＡPbIJD2o6t5
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