a) Solve the inequality 3x+6(>=)4+x
b) Find all intergers which satisfy both the inequalities 3x+6(>=)4+x and 2x-5<0
Help~Inequality~
2010-02-27 7:59 am
回答 (2)
2010-02-27 8:04 am
✔ 最佳答案
a) Solve the inequality 3x+6(>=)4+xSol
3x+6>=4+x
2x>=－2
x>=－1
b) Find all intergers which satisfy both the inequalities 3x+6(>=)4+x and 2x－5<0
Sol
3x+6>=4+x
2x>=－2
x>=－1
2x－5<0
2x<5
2x<5/2
－1<=x<5/2
－1<=x<=2
x=－1 or 0 or 1 or 2
2010-02-27 8:05 am
a/
3x+6≥4+x
2x≥-2
x≥-1
b/
2x-5<0
x<5/2
therefore
-1≤x<5/2
Ans: -1,0,1 or 2
3x+6≥4+x
2x≥-2
x≥-1
b/
2x-5<0
x<5/2
therefore
-1≤x<5/2
Ans: -1,0,1 or 2
參考: me
收錄日期: 2021-04-24 23:21:17
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100226000051KK01982