设全集U=(x/x≥0),集合A=(x/1<x≤2),则cuA =?A∩cuA =?A∪cuA ?
问题描述:
设全集U=(x/x≥0),集合A=(x/1<x≤2),则cuA =?A∩cuA =?A∪cuA ?
答
CuA={x|0≤x≤1或者x>2}
A∩cuA =Φ
A∪cuA =U