( x-1 ) / ( x+1) - (1/x-1) / ( 1/x+1 )?
回答 (1)
收錄日期: 2021-04-18 13:55:25
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20151015061915AA0bWwR
收錄日期: 2021-04-18 13:55:25
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20151015061915AA0bWwR