(本題12分)
已知全集
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集合
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,
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,
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,若
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,求實數(shù)
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的取值范圍.
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科目:高中數(shù)學
來源:不詳
題型:解答題
(本題8分)已知集合

,

.
(1)分別求
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,

;
(2)已知

,若

,求實數(shù)

的取值集合.
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科目:高中數(shù)學
來源:不詳
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(本題滿分14分)
已知

,集合

如果

,求

的值和集合

.
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科目:高中數(shù)學
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(本小題滿分8分)
已知全集U=
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,集合A={
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,集合B=

求:(1)
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(2)

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來源:不詳
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已知集合

,那么集合

為 ( )
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科目:高中數(shù)學
來源:不詳
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已知全集

,集合

和

的關系的韋恩圖(venn)如圖所示,則陰影部分所表示的集合是 ( )
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