等差数列{Sn}中,a1=1,前n项和Sn满足条件 S2n/Sn=4,n=1,2,.(1)求数列{an}的通项公式an和前n项和Sn:(2)记bn=an*2^(n-1),求数列{bn}前n项和Tn:
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![等差数列{Sn}中,a1=1,前n项和Sn满足条件 S2n/Sn=4,n=1,2,.(1)求数列{an}的通项公式an和前n项和Sn:(2)记bn=an*2^(n-1),求数列{bn}前n项和Tn:](/uploads/image/z/4097887-7-7.jpg?t=%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%7BSn%7D%E4%B8%AD%2Ca1%3D1%2C%E5%89%8Dn%E9%A1%B9%E5%92%8CSn%E6%BB%A1%E8%B6%B3%E6%9D%A1%E4%BB%B6+S2n%2FSn%3D4%2Cn%3D1%2C2%2C.%EF%BC%881%EF%BC%89%E6%B1%82%E6%95%B0%E5%88%97%EF%BD%9Ban%7D%E7%9A%84%E9%80%9A%E9%A1%B9%E5%85%AC%E5%BC%8Fan%E5%92%8C%E5%89%8Dn%E9%A1%B9%E5%92%8CSn%EF%BC%9A%EF%BC%882%EF%BC%89%E8%AE%B0bn%3Dan%2A2%5E%28n-1%29%2C%E6%B1%82%E6%95%B0%E5%88%97%EF%BD%9Bbn%7D%E5%89%8Dn%E9%A1%B9%E5%92%8CTn%EF%BC%9A)
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