Solve the compound inequality
{ X^2 + x - 2 < 0
{ x^2 - 2x - 3 ≥ 0
Inequality-------10marks
2010-04-19 12:47 am
回答 (1)
2010-04-19 1:11 am
✔ 最佳答案
Solve the compound inequalityx²+x−2<0
(x−1)(x+2)<0
−2<(x)<1
Solve the compound inequality
x²−2x−3≥0
(x−3)(x+1)≥0
x≥0 or x≤−1
2010-04-18 17:12:35 補充：
Correction:
Solve the compound inequality
x²−2x−3≥0
(x−3)(x+1)≥0
x≥3 or x≤−1
2010-04-18 17:14:58 補充：
For combine two question, −2<(x)≤−1
收錄日期: 2021-04-13 17:12:25
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100418000051KK01122