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作者 Vulpix 在 PTT [ Math ] 看板的留言(推文), 共7235則
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8F推: 從 a(n+1)b(n+1)=a(n)b(n)+1/(a(n)b(n))+2 下去做更02/16 06:29
9F→: 快:a(2)b(2)≧4,且a(n+1)b(n+1)≧a(n)b(n)+2,02/16 06:30
10F→: 因此,a(n)b(n)≧2n。我把他開根號反而複雜化了。02/16 06:32
1F推: 因為那題目是錯的啊。02/14 10:08
15F推: 不是只要知道x-sinx是奇函數就差不多了嗎?02/10 16:54
1F推: Question?當然是錯的。你可以在同一個B上面賦予02/10 16:41
2F→: 很隨便的probability measure。02/10 16:42
3F→: 至於定義成Q直觀不直觀。至少拿樣本點有限的機率空02/10 16:44
4F→: 間來看的時候,應該不算走太多彎路。02/10 16:45
5F→: 你的問題必須要多考慮B和Σ之間的相容性,或者說02/10 16:46
6F→: B上的機率要「繼承」Σ上的機率。02/10 16:47
7F→: 一般來說,我覺得Q(X)/Q(Y)=P(X)/P(Y)應該夠直觀。02/10 16:49
1F推: 化成連分數可以湊一些相近的二次無理數出來。02/07 13:27
1F推: 我覺得你符號用得有點亂,以致有些東西寫錯了。02/07 04:04
2F→: 但你要的東西,概念上應該就是 Fubini's Thm. 吧?02/07 04:04
17F推: 法向量要選朝外的。因為是「散」度,出去的算正,進02/03 21:50
18F→: 來的算負。02/03 21:50
1F推: 你這就是懂題目的意思了啊。01/30 16:13