作者OdysseyGRE ( GO!!!)
看板Statistics
标题[问题] Joint Probability
时间Fri Mar 27 03:24:35 2009
请问大家一个联合机率问题:
Suppose that (X, Y ) is uniformly distributed on a circle
with center at the origin and radius 1.
What is P(2X + Y > 1)?
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1F：→ clickhere:1/3. 03/27 07:52
2F：→ clickhere:延着弧做线积分, 从(0,1)积到(4/5,-3/5), 再除以2\pi. 03/27 07:55