Mathematics
Senior High
Resolved
全体集合Uを実数全体の集合とし、Uの部分集合A,BをA={x>-2/3}, B={x│-1≦x≦2}とする。で
⑴A∪B ⑵Aバー∩Bバー
の求め方の解説お願いします🙏
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