[理工] 一題機率
題目:
A bar or length L is broken into three pieces at two random spots.
What is the probability that the length of at least one piece is less
than L/20 ?
< SOL >
---------- ------- -------------
0 X Y L
我不懂為什麼 結合密度函數 fxy 是2/L^2
接下來就一樣討論範圍就不打了~~
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