设全集I=R,已知集合M={x|(x+3)^2≤0},N={x|x^2+x-6=0}(1)求(CIM)∩N
设全集I=R,已知集合M={x|(x+3)^2≤0},N={x|x^2+x-6=0}(1)求(CIM)∩N
(2)记集合A=(CIM)∩N,已知集合B={x|a-1≤x≤5-a,a∈R},若B∪A=A,求实数a的取值范围
(2)记集合A=(CIM)∩N,已知集合B={x|a-1≤x≤5-a,a∈R},若B∪A=A,求实数a的取值范围
数学人气:434 ℃时间:2020-01-25 21:47:32
优质解答
(1)M = {x丨(x + 3)² ≤ 0}= {- 3}N = {x 丨x ² + x - 6 = 0}= {- 3,2}∴ CI M = {x 丨x ≠ - 3}Ci M ∩ N = {2}(2)A = Ci M ∩ N = {2}∵ B ∪ A = A∴① 当 B 为空集时,则:a - 1 >...
我来回答
类似推荐
猜你喜欢
- 1People ofen remember what they were doing when they heared the news of important events in history.
- 2平衡膳食宝塔的第二层是什么
- 3同班同学英语怎么说
- 4求一英语招聘的作文
- 5甲、乙两地相距351千米,客车和货车同时分别从两地相对开出,经4.5小时相遇.已知客车和货车的速度比为7:6
- 62(-a平方b+3ab平方)-4(ab平方+3a平方b)-2(ab平方-2a平方b),其中a=-
- 7若a是自然数,则a4-3a2+9是质数还是合数?给出你的证明.
- 8爆炸是物理变化还是化学变化
- 9There are some l______on the ground when auntumn comes
- 10若平面α内不共线的三点A,B,C到平面β的距离相等,且A,B,C都在β的同一侧,证明α//β