2x + 3y ≥ 12
x - 3y ≥ 0
y ≥ 0
3 equations show on the one diagram
and useing the symbol ( /// or \\\ ) to denote the area
( if you can not denote the symbol, forget it )
Show the area on the diagram
2008-02-29 3:28 pm
回答 (1)
2008-02-29 7:49 pm
收錄日期: 2021-04-25 17:19:27
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080229000051KK00357