作者midarmyman (midarmyman)
看板trans_math
标题[积分] special的重积分
时间Thu Jun 17 20:09:29 2010
1
∫∫--------------dxdy
√(xy(1-x-y))
范围是x=0 y=0 x+y=1
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 140.117.198.78
1F:→ midarmyman:我用了一个很逼机的代换法有算出来 140.117.198.78 06/17 21:06
2F:→ midarmyman:希望有高手能提供好的方法 140.117.198.78 06/17 21:06
3F:推 AVcorey:应该是王博书里的题目挖来的 118.165.70.47 06/17 21:58
4F:→ midarmyman:不是耶 颗颗 140.117.198.78 06/17 22:12
5F:→ midarmyman:这是某年中山企研所 140.117.198.78 06/17 22:13
6F:→ r19891011:我想知道原po怎麽算的XD 59.121.3.19 06/17 22:22
7F:→ midarmyman:恩Let y=(1-x)t 140.117.198.78 06/17 22:35
8F:→ midarmyman:然後跟他拼了 其实也还好 不会很多算式 140.117.198.78 06/17 22:36
9F:→ dali510313:答案2pi? 140.133.9.152 06/18 00:00
10F:→ midarmyman:是的 140.117.198.78 06/18 16:53
11F:推 owlran:王博书上有这题,令法一样。114.137.201.214 06/18 19:05
12F:→ midarmyman:是欧 140.117.198.78 06/18 22:15