A=1/2(3x+4),若-3小於x小於6，求A的範圍？
回答 (2)
2017-06-08 7:45 pm
✔ 最佳答案
SolA=(3x+4)/2
－3<=x<=6
－9<=3x<=18
－5<=3x+4<=22
－5/2<=(3x+4)/2<=11
－5/2<=A<=11
2017-06-09 11:27 am
應該是小於(<), 不會是小於等於(<=)
收錄日期: 2021-04-30 22:07:19
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20170608111420AAr03xL