Question

已知全集U={x∈N|1≤x≤6},集合A={x|x^2-6x+8=0},B={3,4,5,6}

Answer 1

U={1,2,3,4,5,6},A={x|x²－6x＋8=0}={2,4},B={3,4,5,6}

(1)A∪B={2,3,4,5,6},A∩B={4}

(2)(CuA)={1,3,5,6},则：(CuA)∩B={3,5,6}