全集题、不等式题.(1)设全集为R,A={x||x-1|<4},B={x|x²-2x≥0}求A∩B,A∪B,A
(1)设全集为R,A={X丨X-1丨<4},B={X丨X²-2X≥0},求ANB,AUB,AnCB
设全集U=R,A={x/2x的平方-7x+3≤0},B={x/x的平方+a<0} (1)a=-4时求A∩B、A∪B
设全集为R,集合A={x|-1<x<3},B={x|x<-2},求:
设全集U=R,A={x|x+1≥0},B={x|x
设全集U=R,A={X||X-1|<4},B={X|X^2-2X≥0} 求①A∩B ②A∪B ③A∩CuB
设全集为R,集合A={x| |x-1|<4},B={x| x(2-x)≦0},求A∪B,A∩B的补集.急
设全集为R,A={x|2x²-7x+3≤0},B={x|x²+a<0} (1)若a=-4,求A∩
设全集是实数集R,A={x丨2x-7x+3≤0},B={x丨x+a<0}[1]当a=-4时,求A∩B和A∪B
设全集为R,集合A={x | |x-1| ≥2 },B={x |x>1},A U B、A U B、Cu A、Cu B分别
设全集为R,集合A={x|x<4或x≥7},B={x|-2<x<9} (1)求A∪B,(C↓R
设全集U=R,A={x|x>1},B={x|x+a
设全集U=r,A{x|x>1} B{x|x+a