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| 頁次：1/3 每頁50條記錄， 本頁顯示1 到50， 共136 分頁： [1] [2] [3] [下一頁] [尾頁] | |
| • #跟帖# When moon is between sun and earth, it blocks the radiative heat [腦筋急轉] - wxcfan123(0 bytes ) 2011-12-31 | |
| • #跟帖# 要使老外看得懂，建議用indirect proof [腦筋急轉] - wxcfan123(0 bytes ) 2011-12-26 | |
| • #跟帖# google "congruence" and it is "Proofs Using Congruence" check t [腦筋急轉] - wxcfan123(63 bytes ) 2011-12-26 | |
| • #跟帖# google "law of identity". There is a link for it. Check if it is [腦筋急轉] - wxcfan123(44 bytes ) 2011-12-25 | |
| • #跟帖# 實際上想問的是：因月球的運動，地球晚上溫度會不會有周期性的變化 [腦筋急轉] - wxcfan123(94 bytes ) 2011-12-24 | |
| • 由貧論員的科學問題引起的一個科學問題。 [腦筋急轉] - wxcfan123(255 bytes ) 2011-12-24 | |
| • #跟帖# 人是抽成真空後放進去的？還是放進去後再開始抽，然後計算5分鍾？ [腦筋急轉] - wxcfan123(322 bytes ) 2011-12-23 | |
| • #跟帖# 人對溫度的感覺應該與空氣無關吧。比如將手放在鐵上，手心和鐵之間沒 [腦筋急轉] - wxcfan123(43 bytes ) 2011-12-19 | |
| • #跟帖# 若是線性,則答案是：f(x)=665x - 386. f(3)=1330... [腦筋急轉] - wxcfan123(0 bytes ) 2011-12-09 | |
| • #跟帖# 謝謝好題。腦筋急轉+數學。 [腦筋急轉] - wxcfan123(0 bytes ) 2011-12-04 | |
| • #跟帖# 來一個標題黨：半路殺出來的概率事件。找到了算法。概率：35/128. [腦筋急轉] - wxcfan123(296 bytes ) 2011-12-04 | |
| • #跟帖# Second question. [腦筋急轉] - wxcfan123(233 bytes ) 2011-12-03 | |
| • #跟帖# Why the fourth student must cut a bow to form a square? [腦筋急轉] - wxcfan123(0 bytes ) 2011-12-03 | |
| • #跟帖# 這個概率有點意思了。重算概率如下。請教有不有好一點的算法？ [腦筋急轉] - wxcfan123(548 bytes ) 2011-12-03 | |
| • #跟帖# 143547? [腦筋急轉] - wxcfan123(0 bytes ) 2011-12-03 | |
| • #跟帖# 分法：先切一個內接正方形。再將它沿一邊等分七等分。概率：1/11! ? [腦筋急轉] - wxcfan123(0 bytes ) 2011-12-02 | |
| • #跟帖# 回複：圓O半徑為r，弦AB將圓O分為S和s兩弓形，⦟AOB = x。求：麵積比s / S =？ [腦筋急轉] - wxcfan123(89 bytes ) 2011-12-01 | |
| • #跟帖# 更正：R=sqrt(OP^2 + 1), 作法見內 [腦筋急轉] - wxcfan123(145 bytes ) 2011-11-21 | |
| • #跟帖# 不知理解對沒有。 [腦筋急轉] - wxcfan123(110 bytes ) 2011-11-20 | |
| • #跟帖# 女婿。 [腦筋急轉] - wxcfan123(0 bytes ) 2011-11-13 | |
| • 介紹一個很好的(如果不是最好的)數獨軟件-SudoGu [腦筋急轉] - wxcfan123(829 bytes ) 2011-11-11 | |
| • 百度文庫中有不少哥德巴赫猜想的初等證明 [腦筋急轉] - wxcfan123(291 bytes ) 2011-11-06 | |
| • #跟帖# 很仔細的觀察。 [腦筋急轉] - wxcfan123(253 bytes ) 2011-11-05 | |
| • （ZT）科普一下西塔潘猜想 [腦筋急轉] - wxcfan123(1485 bytes ) 2011-10-29 | |
| • #跟帖# 您的軟件放在網上了嗎。用什麽寫的。 [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-29 | |
| • #跟帖# 終於明白了，這題中的提示其實是糊弄人的。 [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-28 | |
| • #跟帖# 13112221? [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-26 | |
| • #跟帖# 這證明簡潔。頂一個。 [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-25 | |
| • #跟帖# 當然不可能一次到位，反複應用可以解大部分免費報紙上的Sudoku [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-23 | |
| • #跟帖# 謝謝！同問PROF MO的中文名? [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-18 | |
| • #跟帖# 說真的，這隻能算個說明。等LZ的答案吧。 [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-18 | |
| • #跟帖# 回複：理由呢？ [腦筋急轉] - wxcfan123(150 bytes ) 2011-10-18 | |
| • #跟帖# 從任一方向截這物體，其截麵應該是周長相同的平麵圖形中麵積最大的-園。 [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-18 | |
| • #跟帖# 證明時就要用到LZ的旋轉了。(純幾何證明) [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-17 | |
| • #跟帖# 估摸著是要將它們搞到一個平麵上去。投影是不行。謝謝！ [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-17 | |
| • #跟帖# 很好的提示。是不是將Y作伸縮，然後將圓的結果變回來？ [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-17 | |
| • #跟帖# 試用純幾何方法解一下 [腦筋急轉] - wxcfan123(500 bytes ) 2011-10-16 | |
| • #跟帖# 從結果可看出解法。但我的結果有點不一樣。 [腦筋急轉] - wxcfan123(501 bytes ) 2011-10-15 | |
| • #跟帖# 狗來一個結果： [腦筋急轉] - wxcfan123(186 bytes ) 2011-10-15 | |
| • 試解津京擴展的貧論員的問題 [腦筋急轉] - wxcfan123(1088 bytes ) 2011-10-14 | |
| • #跟帖# "當m = 1，根據（1）和（2），D(1) = T(2) - T(1) = 1/2 = (-1)^2 / 2! " [腦筋急轉] - wxcfan123(156 bytes ) 2011-10-13 | |
| • #跟帖# If T(2) - T(1) != 1/2, how to prove Lemma1 of AllBrother? [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-12 | |
| • #跟帖# Roughly, S(n+1) < 2nS(n) < 2(n+1)S(n) ~ 2(n+1)!. Should be conve [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-10 | |
| • #跟帖# Give an example: S(n) = 1/2(S(n-1) + S(n-2)), S(1) = S(2) = 1. [腦筋急轉] - wxcfan123(90 bytes ) 2011-10-10 | |
| • #跟帖# 如果沒見過這題，能將S(N)解出來，那水平是相當不錯的了。 [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-10 | |
| • #跟帖# to determine the solution of the system: [腦筋急轉] - wxcfan123(296 bytes ) 2011-10-07 | |
| • #跟帖# It should be the same as calculate the ranks of two matrix to d [腦筋急轉] - wxcfan123(160 bytes ) 2011-10-07 | |
| • #跟帖# 回複：A52=4 or 7, how do you know it is 4? Guess and try or some lo [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-04 | |
| • #跟帖# This one is really hard, altough it is only rated to 3 (highest [腦筋急轉] - wxcfan123(249 bytes ) 2011-10-03 | |
| • #跟帖# I know that cell can only be set to 4 or 7, but can not logicall [腦筋急轉] - wxcfan123(0 bytes ) 2011-10-03 | |
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