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作者 Dawsen 在 PTT 全部看板的留言(推文), 共958則
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3F推:妙解!07/14 05:18
4F推:另外一種構造法 http://tinyurl.com/7absn5d07/14 12:12
2F推:第五題可以用暴力法07/12 12:33
8F推:好威05/04 22:49
1F推:step1: 找質因數04/17 23:21
2F→:step2: 列出d2+d4+d6+...04/17 23:21
3F→:step3: 類似因式分解的方式分解04/17 23:22
8F推:考慮組合意義可以發現餘項的合與前面幾項相同04/11 12:23
3F推:nx2^(n-1)=(a+1)(a-1) (a+1,a-1)<=2 2n+2>=2^(n-2)08/04 05:59
1F推:學長太強了!!!08/01 13:32
2F→:因為是數列的關係,Step 2很像是sup跟inf,有修過高維的08/01 13:33
3F→:比較容易想到要這樣取?08/01 13:33
4F推:應該要1+5+6 4+3+207/23 06:05
2F推:網路上找到的答案.. http://0rz.tw/k13is 應該有部份分07/22 05:31
3F→:加油 雖然還有點遠 但你有機會!!07/22 05:32
11F推:不太懂唯一解的意思...如果S剛好是個凸多邊形..凸包法也可07/22 10:23
12F→:以解... 是說一般化能證明的構造只有這一種?07/22 10:23