若集合A={x丨丨x-1丨<2},B={x丨丨x-1丨>1},则A∩B=
A: (-1,0)
B: (-1,0)U(2,3)
C: (-1,3)
D: (-∞,0)U(3,+∞)
A: (-1,0)
B: (-1,0)U(2,3)
C: (-1,3)
D: (-∞,0)U(3,+∞)
举一反三
- 设集合A={x丨-1<x<2},B={x丨1<x<3},则A∪B=______. A: {x丨-1<x<2} B: {x丨1<x<3} C: {x丨1<x<2} D: {x丨-1<x<3}
- 集合A={x丨-1 A: {x丨-1<x<5} B: {x丨3<x<5} C: {x丨-1<x<1} D: {x丨1<x≤3}
- 设集合A={x丨-2<x<1或x>1},集合B={x丨x2+ax+b≤0},已知A∪B={x丨x>-2},A∩B={x丨1<x≤3},试求a,b的值.
- 设置集合M={x丨-1≤x<2}。N={x丨x≤1},则集合M∩N=() A: {x丨x > -1} B: {x丨x > 1} C: {x丨-1 ≤ x ≤ 1} D: {x丨1 ≤ x ≤ 2}
- 【简答题】已知集合A={x丨丨x丨<1},B={x丨丨3-2x丨≥3},求A∩B,AUB(13.0分)