Mathematics
Senior High
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解説お願いします🙇🏻♀️
2つの集合 A = {1, 4, 2a+1, 2}, B ={9, 6, 6-3α} について, BCA
となるような整数α, bの値をすべて求めよ。
(8)(
5 次のことを証明せよ。
(1) A={4n-3|n は整数}, B= {2n+1|n は整数} のとき, ACB
(2) A = {15m+21nm, n は整数}, B ={3kkは整数} のとき, A=B
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