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14F推: 算出來x=1時 同時有最小值 你算一下就知道了10/08 23:20
1F推: 那個線段AC吧 寫錯了10/08 10:36
1F推: 7.http://i.imgur.com/9VHqoQj.jpg10/08 09:15
2F→: 8.http://i.imgur.com/GmVQiPD.jpg10/08 09:15
3F推: 設a<b<c<d<e皆為自然數06/06 08:48
4F→: a+b+c=15,a+b+d=16,b+c+e=27,c+d+e=2906/06 08:49
5F→: 10個數的總和→216=6(a+b+c+d+e)→a+b+c+d+e=3606/06 08:50
6F→: (a+b+c)+(c+d+e)=a+b+2c+d+e=4406/06 08:51
7F→: 上面兩式得c=806/06 08:52
8F→: a+b=7代入a+b+d=16→d=1106/06 08:53
9F→: b+c+e=27→這個是b+d+e=27才對06/06 08:55
10F→: d+e=21代入b+d+e=27→b=606/06 08:55
11F→: c=8,b=6代入a+b+c=15→a=106/06 08:56
12F→: 上面的d=9才對 好難打06/06 08:58
13F→: c=8,d=9代入c+d+e=29→e=1206/06 08:58
14F→: 所以a=1,b=6,c=8,d=9,e=1206/06 08:59
15F→: a*b*c*d*e自己算吧06/06 08:59
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