2811脑筋急转弯中等derivationmedium
Expected Chord Length From a Uniform Midpoint
题目
A chord of the unit circle is generated by choosing its midpoint uniformly in the disk. What is the expected chord length?
解题计时
0:00
提交作答时记录，用于后续平均用时统计。
你的答案
题目
A chord of the unit circle is generated by choosing its midpoint uniformly in the disk. What is the expected chord length?
解题计时
0:00
提交作答时记录，用于后续平均用时统计。
你的答案