Re: [其他] 1=0.9999999999999... 嗎
1-0.9...是多少?
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◆ From: 1.34.222.117
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04/06 21:55, , 1F
04/06 21:55, 1F
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04/06 21:56, , 2F
04/06 21:56, 2F
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04/06 21:56, , 3F
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04/06 21:57, , 4F
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04/06 21:59, , 5F
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04/06 22:01, , 6F
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0.9...不是一個正統的表達形式,
而是刻意營造出來的。
計算1/1時,當然會得到1。
如果故意把個位數寫0,
讓它不要直接除盡。
而後面每個位數就都是9,
才會得到0.9...這種形式。
但終究只是在計算1/1,
並不會得到1以外的值。
※ 編輯: yee381654729 來自: 1.34.222.117 (04/06 22:16)
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01/02 15:20,
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