设全集U=R,A={x∈R|a≤x≤2},B={x∈R|2x+1≤x+3,且3x≥2}.设全集U=R,A={x∈R|a≤x≤2},B={x∈R|2x+1≤x+3,且3x≥2}.(1)若A∩B=B,求实数a的取值范围.(2)若a=1,求A∪B,(CuA)∩B详细过程
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设全集U=R,A={x∈R|a≤x≤2},B={x∈R|2x+1≤x+3,且3x≥2}.设全集U=R,A={x∈R|a≤x≤2},B={x∈R|2x+1≤x+3,且3x≥2}.(1)若A∩B=B,求实数a的取值范围.(2)若a=1,求A∪B,(CuA)∩B详细过程
设全集U=R,A={x∈R|a≤x≤2},B={x∈R|2x+1≤x+3,且3x≥2}.
设全集U=R,A={x∈R|a≤x≤2},B={x∈R|2x+1≤x+3,且3x≥2}.
(1)若A∩B=B,求实数a的取值范围.
(2)若a=1,求A∪B,(CuA)∩B
详细过程
设全集U=R,A={x∈R|a≤x≤2},B={x∈R|2x+1≤x+3,且3x≥2}.设全集U=R,A={x∈R|a≤x≤2},B={x∈R|2x+1≤x+3,且3x≥2}.(1)若A∩B=B,求实数a的取值范围.(2)若a=1,求A∪B,(CuA)∩B详细过程
(1)[2/3,2]
(2)A U B=[1,2] ,(CuA)∩B=空集
这个很随意的啦但是我不会大于等于的符号没办法详细解了