想問下0.9999..........(無限) 係咪姐係1黎 - 聊天討論版

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發表於 11-1-26 01:37 AM |顯示全部帖子

原帖由悶心於 11-1-25 11:38 PM 發表
設X =0.999999999.....
10X=9.99999999999........

10X-X=9.99999999-0.9999999999

9X = 9
X=1

係高級數學講法, 呢個係錯概念

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[疑難] 想問下0.9999..........(無限) 係咪姐係1黎 [複製鏈接]