设全集U=R,A={x|x-1≥0},B={x|1-
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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|1-
设全集U=R,A={x|x-1≥0},B={x|1-
A={x|x-1≥0}={x|x≥1}
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≥0},B={x|1-
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} B{x|x+a
设全集U=R,A={x|1/x
设全集U=R,集合A={x|0
设全集U=R,集合A={x|0
设全集U=R,A={x|0
设全集U=R,集合A={X|-1
设全集U=R,集合A={x|-1
设全集U=R,集合A={x/1
设全集U=R,A={x|-1
设全集U=R,集合A=(x|-1
设全集U=R,集合A={x|-1
设全集U=R,集合A=(X|-1
设全集U=R,集合A={x|x≥2},B={x|0≤x
设全集U=R,A={x|x≤1或x≥3},B={x|k