设数列{an}是等差数列,数列﹛bn﹜的前n项和为Sn=2/3(bn-1),若a2=b1,a3=b2.求 :⑴数列{an}的通项公式;⑵数列{bn}的前n项和Sn.
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![设数列{an}是等差数列,数列﹛bn﹜的前n项和为Sn=2/3(bn-1),若a2=b1,a3=b2.求 :⑴数列{an}的通项公式;⑵数列{bn}的前n项和Sn.](/uploads/image/z/935023-31-3.jpg?t=%E8%AE%BE%E6%95%B0%E5%88%97%7Ban%7D%E6%98%AF%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%2C%E6%95%B0%E5%88%97%EF%B9%9Bbn%EF%B9%9C%E7%9A%84%E5%89%8Dn%E9%A1%B9%E5%92%8C%E4%B8%BASn%3D2%2F3%EF%BC%88bn-1%EF%BC%89%2C%E8%8B%A5a2%3Db1%2Ca3%3Db2.%E6%B1%82+%EF%BC%9A%E2%91%B4%E6%95%B0%E5%88%97%7Ban%7D%E7%9A%84%E9%80%9A%E9%A1%B9%E5%85%AC%E5%BC%8F%EF%BC%9B%E2%91%B5%E6%95%B0%E5%88%97%7Bbn%7D%E7%9A%84%E5%89%8Dn%E9%A1%B9%E5%92%8CSn.)
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