设全集U=R,A={x|x-1≥0},B={x|1-

设全集U=R,A={x|x+1≥0},B={x|x 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 设全集U=R,A={x|x≤1或x≥3},B={x|k 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U=R,集合A={X|-1 设全集U=R,A={x|-1 设全集U=R A=(x|x2)B=(x|-1 设全集U=R,集合A={X|-1小于等于x小于等于3},b={x|0 设全集U=R,集合A=｛x|0≤x≤3｝,B=｛x|1 设全集U=R,集合A={x|-1≤x≤3},B={x|0 设全集U=R,集合A=｛x丨x≤1｝,集合B={X丨0