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#9d0465ee-341d-4766-b22b-8a3e8780f76b简单选择题交集定义与运算集合与常用逻辑用语

不等式集合的交集

设集合 A={xx>1}A = \{x \mid x > 1\},集合 B={xx<5}B = \{x \mid x < 5\},则 AB=A \cap B =

A. {x1<x<5}\{x \mid 1 < x < 5\}
B. {xx>1}\{x \mid x > 1\}
C. {xx<5}\{x \mid x < 5\}
D. {xx<1 或 x>5}\{x \mid x < 1 \text{ 或 } x > 5\}

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