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.這道題我告訴你解法吧.式子不會打.哈哈.用文字給你講吧! 想法就是分子有理化.分子分母同時乘以x+1開根號加上1 這樣分子就變成x .與分母的x可以約掉了. 分子變為1.分母變為x+1開根號加上1 把x=0代入.就得到結果極限為二分之一.1/2
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