已知集合A={x|x<a},B={x|1<x<2},A∪(∁RB)=R,则实数a的取值范围是 ___ .
人气:116 ℃ 时间:2020-02-06 08:08:42
解答

∵B={x|1<x<2},
∴∁
RB={x|x≥2或x≤1},
要使A∪(∁
RB)=R,则a≥2.
故答案为:{a|a≥2}.
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