题目
题型:单选题难度:简单来源:陕西一模
A.∅ | B.{0} | C.{2} | D.{0,2} |
答案
∴CUN={x|x≤1},
∴M∩CUN={0}.
故答案选B.
核心考点
举一反三
A.{2} | B.{1,2} | C.{1,2,3,4} | D.{1,2,3,4,5} |
4π2 |
5 |
(I)求集合A;
(Ⅱ)若B={x∈R|x2=πa},且B∩A=∅,求实数a的取值范围.
A.21 | B.8 | C.7 | D.6 |
A.{0} | B.{-3,-4} | C.{-4,-2} | D.φ |
A.∅ | B.{0} | C.{2} | D.{0,2} |
A.{2} | B.{1,2} | C.{1,2,3,4} | D.{1,2,3,4,5} |
4π2 |
5 |
A.21 | B.8 | C.7 | D.6 |
A.{0} | B.{-3,-4} | C.{-4,-2} | D.φ |