急!高一数学,要有解题过程,告诉我为什么的设集合P={x│x=3m,m∈z},Q={x│x=3m+1,m∈z},S={x│x=3m-1,m∈z},而且a∈P,b∈Q,c∈S,设d=a+b-c则有( )(A)d∈P (B)d∈Q (C)d∈S (D)d∈PUQ
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/12 09:00:29
![急!高一数学,要有解题过程,告诉我为什么的设集合P={x│x=3m,m∈z},Q={x│x=3m+1,m∈z},S={x│x=3m-1,m∈z},而且a∈P,b∈Q,c∈S,设d=a+b-c则有( )(A)d∈P (B)d∈Q (C)d∈S (D)d∈PUQ](/uploads/image/z/9418161-57-1.jpg?t=%E6%80%A5%21%E9%AB%98%E4%B8%80%E6%95%B0%E5%AD%A6%2C%E8%A6%81%E6%9C%89%E8%A7%A3%E9%A2%98%E8%BF%87%E7%A8%8B%2C%E5%91%8A%E8%AF%89%E6%88%91%E4%B8%BA%E4%BB%80%E4%B9%88%E7%9A%84%E8%AE%BE%E9%9B%86%E5%90%88P%3D%7Bx%E2%94%82x%3D3m%2Cm%E2%88%88z%7D%2CQ%3D%7Bx%E2%94%82x%3D3m%2B1%2Cm%E2%88%88z%7D%2CS%3D%7Bx%E2%94%82x%3D3m-1%2Cm%E2%88%88z%7D%2C%E8%80%8C%E4%B8%94a%E2%88%88P%2Cb%E2%88%88Q%2Cc%E2%88%88S%2C%E8%AE%BEd%3Da%2Bb-c%E5%88%99%E6%9C%89%28++%29%28A%29d%E2%88%88P+++%28B%29d%E2%88%88Q+++%28C%29d%E2%88%88S+++%28D%29d%E2%88%88PUQ)
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