- 2
-
解不等式组
- 13
-
不等式组
的解集是()
- A.{x|0<x<2}
- B.{x|0<x<2.5}
- C.{x|0<x<<img src="//img1.yqda.net/question-name/27/680c31f8aec6debfc88fbc0b13499c.png" width="26" height="24"/>}
- D.{x|0<x<3}
- A.l
- B.8
- C.1或8
- D.都不是
- A.<img src="//img1.yqda.net/question-name/40/e6a35df202ab8a38fd90cdb91fd30f.png" width="16" height="42"/>
- B.<img src="//img1.yqda.net/question-name/e4/5b816f292ee2981816430d26a0eec1.png" width="15" height="42"/>
- C.<img src="//img1.yqda.net/question-name/03/8de200da3dae2cf5164bbd0e856114.png" width="16" height="42"/>
- D.<img src="//img1.yqda.net/question-name/21/2a04b5f2156c7d54922ff4247eff87.png" width="16" height="42"/>
- A.1
- B.<img src="//img1.yqda.net/question-name/0a/46125780bd387b685d6369d2ea91c7.png" width="16" height="42"/>
- C.<img src="//img1.yqda.net/question-name/39/1d0c5874c79a5e651445de16098e58.png" width="27" height="42"/>
- D.-2
- A.充分条件
- B.必要条件
- C.充要条件
- D.既不充分也不必要条件
- A.8
- B.2
- C.-4
- D.-8
- A.6
- B.-6
- C.±2
- D.±6
- A.{1}
- B.{2}
- C.{3,4}
- D.{1,2,3,4}
- A.144种
- B.72种
- C.96种
- D.84种
- A.3x+2y-1=0
- B.3x+2y+7=0
- C.2x-3y+6=0
- D.2x-3y+8=0