1/3 = 1+3/5+7 = 1+3+5/7+9+11 = 1+3+5+7/9+11+13+15 = .............
Why this appear? proved it.
偶數有類似情況? proved it why or why not.
收錄日期: 2021-04-13 18:21:50
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20111120000051KK00689