设A为实数集且满足条件:若a∈A,则1/(1-a)∈A(a不等于1)1.若2∈A A中有几个元素 求出这几个元素2.A是否为单元素集合?理由3.若a∈A,证明:1-(1/a)∈A
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![设A为实数集且满足条件:若a∈A,则1/(1-a)∈A(a不等于1)1.若2∈A A中有几个元素 求出这几个元素2.A是否为单元素集合?理由3.若a∈A,证明:1-(1/a)∈A](/uploads/image/z/10919711-47-1.jpg?t=%E8%AE%BEA%E4%B8%BA%E5%AE%9E%E6%95%B0%E9%9B%86%E4%B8%94%E6%BB%A1%E8%B6%B3%E6%9D%A1%E4%BB%B6%3A%E8%8B%A5a%E2%88%88A%2C%E5%88%991%2F%281-a%29%E2%88%88A%28a%E4%B8%8D%E7%AD%89%E4%BA%8E1%EF%BC%891.%E8%8B%A52%E2%88%88A++A%E4%B8%AD%E6%9C%89%E5%87%A0%E4%B8%AA%E5%85%83%E7%B4%A0++++++++%E6%B1%82%E5%87%BA%E8%BF%99%E5%87%A0%E4%B8%AA%E5%85%83%E7%B4%A02.A%E6%98%AF%E5%90%A6%E4%B8%BA%E5%8D%95%E5%85%83%E7%B4%A0%E9%9B%86%E5%90%88%3F%E7%90%86%E7%94%B13.%E8%8B%A5a%E2%88%88A%2C%E8%AF%81%E6%98%8E%EF%BC%9A1-%281%2Fa%29%E2%88%88A)
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