25.已知全集U=R,集合A={x|-3
人气:133 ℃ 时间:2019-11-04 13:10:48
解答
B的补集为{x||x|>=a},若A交(B的补集)=空集,A中元素绝对值=5.
推荐
- 知全集U=R,集合A={x| =3
- 已知全集U=R,集合A={x|x<-1},B={x|2a<x<a+3},且B⊆∁RA,求a的取值范围.
- 设全集U=R,A={x|3m-1〈x〈2m},B={x|-1〈x〈3},若集合A是集合B补集的真子集,求实数m的取值范围
- 已知全集U=R,A={x^2-4>0}B={x
- 设全集U=R,集合A={x|(x+1)^-(a-1)^>0,a
- 鱼虱子为什么能浮在水面上?请用物理知识回答.
- 味觉和嗅觉感受器均感受什么信息,两者相互影响形成味觉
- After having been wounded towards the end of the war,he had been sent to hospital and was separated from his unit.
猜你喜欢