Question

已知全集U=R,A={x丨-4≤x≤2｝，B=｛x丨-1<x≤3｝，p={x丨x≤0或x≥5/2} 求A交B 求（CuB）并P

求（AUB)并（CuP)

Answer 1

A∩B={X|-1＜X≤2}
(CuB)={X|X≤-1或X＞3}
(CuB)∪P={X|X≤0或X≥5/2}

Answer 2

A交B={x丨-1<x≤2｝
（CuB）并P=｛x丨x≤0或x≥5/2}