Re: [ ⑨ ] ⑨章算經大解題 (內有詳解
推
,
log 9
2009 = log ─────────
[ln9] log √√...√9
(2009個)
這是正解,跟我的答案雖然沒有完全一樣不過可以算是同類:
2009 = - log ( log √√...√9 )
[ln9] 9 (2009個)
也就是說,這題其實是「用三個⑨表示隨便一個整數」
但如果題目出成這樣,被想到or搜尋到的機會會大增,所以我用2009來偽裝
不過沒想到一堆人真的把2009湊出來了XD
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推
09/10 15:28, , 1F
09/10 15:28, 1F
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09/10 15:30, , 2F
09/10 15:30, 2F
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09/10 15:30, , 3F
09/10 15:30, 3F
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09/10 15:31, , 4F
09/10 15:31, 4F
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09/10 15:32, , 5F
09/10 15:32, 5F
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09/10 15:32, , 6F
09/10 15:32, 6F
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09/10 15:33, , 7F
09/10 15:33, 7F
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09/10 15:33, , 8F
09/10 15:33, 8F
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09/10 15:34, , 9F
09/10 15:34, 9F
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09/10 15:35, , 10F
09/10 15:35, 10F
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09/10 15:40, , 11F
09/10 15:40, 11F
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09/10 15:41, , 12F
09/10 15:41, 12F
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09/10 15:42, , 13F
09/10 15:42, 13F
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09/10 15:42, , 14F
09/10 15:42, 14F
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09/10 15:42, , 15F
09/10 15:42, 15F
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09/10 15:43, , 16F
09/10 15:43, 16F
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09/10 15:45, , 17F
09/10 15:45, 17F
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09/10 15:48, , 18F
09/10 15:48, 18F
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09/10 15:52, , 19F
09/10 15:52, 19F
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09/10 17:45, , 20F
09/10 17:45, 20F
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09/10 19:33, , 21F
09/10 19:33, 21F
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09/11 15:15, , 22F
09/11 15:15, 22F
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