學習"開源節流"或許是您應該做的.

來源: 2009-09-16 15:50:15 [博客] [舊帖] [給我悄悄話] 本文已被閱讀:

您應該好好讀一下這本書

http://search.barnesandnoble.com/Algebra-for-Dummies-W-Algegra-Workbook-for-Dummies/For-Dummies/e/9780470430958/?itm=1