问题
选择题
若集合A={x|-2≤x≤3}，B={x|x＜-1或x＞4}，则集合A∩B等于（ ）
A．{x|x≤3或x＞4}
B．{x|-1＜x≤3}
C．{x|3≤x＜4}
D．{x|-2≤x＜-1}
答案
如图所示
故选D．
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若集合A={x|-2≤x≤3}，B={x|x＜-1或x＞4}，则集合A∩B等于（ ）
A．{x|x≤3或x＞4}
B．{x|-1＜x≤3}
C．{x|3≤x＜4}
D．{x|-2≤x＜-1}
如图所示
故选D．
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