變換主項:
(1) ( B + eG )( e + G ) = eB + BG [ 變 B , e , G 為主項 ]
收錄日期: 2021-04-11 18:46:11
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110614000051KK00875