已知全集U={x|-x^2+3x-2≤0},集合A={x||x-2|>1},集合B={x|(x+1)/(x-2) ≥0} 求:(1)A∩B (2)A∪B(3)A∩CuB(4)CuA∪B
已知全集U={x|-x^2+3x-2≤0},集合A={x||x-2|>1},集合B={x|(x+1)/(x-2) ≥0} 求:(1)A∩B (2)A∪B(3)A∩CuB(4)CuA∪B
数学人气:984 ℃时间:2020-01-28 09:27:54
优质解答
U={x|-x²+3x-2≤0}={x|x²-3x+2≥0}={x|(x-1)(x-2)≥0}={x|x≥2 or x≤1}A={x| |x-2|>1}={x|x-2>1 or x-23 or x2 or x≤-1}(1),A∩B={x| x≤-1or x>3 }(2),A∪B={x| x>2 or x
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