Write the solution using interval notation: -1<2x+1/3<_2?
回答 (1)
2015-01-23 3:37 pm
I assume you mean -1 < (2x +1)/3 ≤ 2
so, multiplying by 3 we have:
-3 < 2x + 1 ≤ 6
so, -4 < 2x ≤ 5
i.e. -2 < x ≤ 5/2
Interval notation => (-2, 5/2]
:)>
so, multiplying by 3 we have:
-3 < 2x + 1 ≤ 6
so, -4 < 2x ≤ 5
i.e. -2 < x ≤ 5/2
Interval notation => (-2, 5/2]
:)>
收錄日期: 2021-04-21 01:15:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150123072346AAXjItE