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2022年安徽对口高考数学试卷解析
首先我们需要知道,A∪B 为并集,即 A 集合和 B 集合都有的内容(假如 AB 集合中都有 1,则只用写一遍 故答案为:C. {-1,0,1,2,3} 对于绝对值不等式,我们需要知道大于取两边,小于取中间,如图。本题为大于,则取两边。我们就可以将它看作 x+1≥2和…
学习笔记
2 min
10 days ago
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