3/4 X 8/9 X 15/16 X.......X (n^2 -1)/ n^2 =??
請詳解過程
答案為n+1/2n
收錄日期: 2021-04-30 15:48:18
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110517000015KK03100