作者查詢 / sarsman
作者 sarsman 在 PTT [ Grad-ProbAsk ] 看板的留言(推文), 共410則
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105F推: 好歹是正式的入學考試,感覺C應該是取原意02/02 08:10
2F推: 基本上九成九用algo版,DS版非常少考,去年只有愛出冷門07/17 06:49
3F→: 題的清大有考一題07/17 06:49
1F推: 1.因為考慮a≠0時,a屬於(R-{0}),又因為已知具消去性03/30 03:42
2F→: a · b = a · 0,等號左右消掉a即得b = 003/30 03:46
1F推: 這種鴿籠系列的題目常常需要用經驗來假設狀況做證明03/17 11:30
2F→: 思路我覺得能這樣想,題目要證明所有S的非空子集合的組合03/17 11:36
3F→: 之中,存在著相異組合的sum是相同的03/17 11:38
4F→: 換個角度想就是「存在兩組」即得證03/17 11:40
5F→: 為了用鴿籠做證明,因此要考慮對證明有利的情況,結果就03/17 11:40
6F→: 是利用這個|A|<=3的情況03/17 11:41
7F→: 可以想想看|A|為4的情況,就會發現無法證出來惹,鴿子數03/17 11:46
8F→: 跟籠子數相同03/17 11:46
3F推: 再等十幾天就知道惹03/01 14:44
21F→: 我假設高度是0,已爆03/13 12:51
27F→: 這時候就會覺得交大真der是佛心學校,選擇題有問題公佈出03/15 02:56
28F→: 來大家一起公審03/15 02:56
21F推: 看教授ㄅ02/14 20:52
14F推: 今年感覺很多學校考SVD02/10 12:13
20F推: 還要考慮倒扣,沒這麼容易預測ㄅ02/07 20:43
65F推: 感覺是非沒有,所以有些選項還是硬著頭皮選了qq02/07 19:01
13F推: 20000+102/07 12:16
31F推: 我選1002/07 12:32
44F推: 阿對 那題應該是11,我漏算asymmetric全為0的狀況了囧02/07 12:37
79F推: leo大+10分02/07 13:07