試題分析:根據(jù)題意,由于集合
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=={x|
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},
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={x|
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},那么可知
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,選A.
點評:解決的關(guān)鍵是根據(jù)不等式的求解來得到集合,同時結(jié)合交集的定義求解,屬于基礎(chǔ)題。
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下列關(guān)系正確的是:(1)0
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{0};(2)
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{0};(3)
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{0};(4)
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已知全集
U={
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,1,2,3,4},集合
A={1,2,3},
B={2,4},則(∁
UA)∪
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已知全集U=R,集合A={1,2,3,4,5},B={
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},下圖中陰影部分所表示的集合為
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A.{0,1,2} B.{1,2}
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集合
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{
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,1},
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{
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,1,2},其中
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{1, 2,…,9},則滿足條件
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的事件的概率為( �。�
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已知集合
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,
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,
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,全集為實數(shù)集R。(1)求
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,
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;(2)若
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,求
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的取值范圍。
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