Question

已知集合A={x丨丨x丨小于等于2,x属于R},B={x丨根号x小于等于4,x属于Z},则A交B=

Answer 1

A={x丨-2≤x≤2,x∈R}

B={x丨0≤x≤16,x∈Z}

A∩B ={0,1,2}