Mercury's Blog

n维墙角与e的估计

Posted on 2023-07-10 Edited on 2024-11-09

http://www.matrix67.com/blog/archives/3507

https://www.zhihu.com/question/64089362

记\(U_1,U_2,\dots\)为一列独立随机变量，均服从\((0,1]\)上的均匀分布。记

\[ \xi = \min\{n \geq 1: U_1+U_2+\dots+U_n > 1\}, \]

求\(E(\xi)\)。