作者OdysseyGRE ( GO!!!)
看板Statistics
標題[問題] Joint Probability
時間Fri Mar 27 03:24:35 2009
請問大家一個聯合機率問題:
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:延著弧做線積分, 從(0,1)積到(4/5,-3/5), 再除以2\pi. 03/27 07:55