math!!!!!!!!!!

2008-02-24 2:37 am
求 x 值的範圍使 2-x 小於或等於3(x-6) 及 (x-6 )/3 小於或等於3 同時成立。

回答 (2)

2008-02-24 3:15 am
✔ 最佳答案
Solution:

圖片參考:http://hk.geocities.com/stevieg_1023/AAAAAAAAAAAAAAAAAAAA.gif
2008-02-24 3:21 am
2-x <= 3x- 18

20 <=4x

5 <=x

(x-6)/3 <=3

x-6 <=9

x <=15

therefore , 5<= x <= 15


收錄日期: 2021-04-27 16:34:44
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080223000051KK03401

檢視 Wayback Machine 備份