Re: [計量] 請教幾題計量
原文恕刪
S is the sum of three consecutive integers, the greatest of which is x.
S是三個連續整數的合，三個數中最大是x
三個整數妳可以想成是 x-2 x-1 x
In terms of S, which of following is the sum of three consecutive
integers, the least of which is x?
用S去表示的話，當x是三個連續整數中最小的一個，合會是多少
x-1 = S/3
x = S/3 + 1
求 x+(x+1)+(x+2) = ??
x+(x+1)+(x+2) = 3x + 3 = (S/3 + 1)*3 + 3
= S + 6
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◆ From: 118.168.34.221
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01/17 14:58, , 1F
01/17 14:58, 1F
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01/17 15:12, , 2F
01/17 15:12, 2F
題目要分成兩階段看
第一段是條件 也就是有三個連續整數 最大是x 合是S
第二段是問題 要求用S來表式另外三個連續整數 且最小的數是x
※ 編輯: rock1985 來自: 118.168.34.221 (01/17 15:15)
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01/17 15:50, , 3F
01/17 15:50, 3F
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01/17 15:53, , 4F
01/17 15:53, 4F
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01/17 15:58, , 5F
01/17 15:58, 5F
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01/17 15:58, , 6F
01/17 15:58, 6F
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