高一数学数列的题目怎么做?已知正项数列{an}满足a1=1,2Sn=2an^2+(an)-1(1)求an(2)bn=an/2^n,求{bn}的谦n项和
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![高一数学数列的题目怎么做?已知正项数列{an}满足a1=1,2Sn=2an^2+(an)-1(1)求an(2)bn=an/2^n,求{bn}的谦n项和](/uploads/image/z/644226-42-6.jpg?t=%E9%AB%98%E4%B8%80%E6%95%B0%E5%AD%A6%E6%95%B0%E5%88%97%E7%9A%84%E9%A2%98%E7%9B%AE%E6%80%8E%E4%B9%88%E5%81%9A%3F%E5%B7%B2%E7%9F%A5%E6%AD%A3%E9%A1%B9%E6%95%B0%E5%88%97%EF%BD%9Ban%EF%BD%9D%E6%BB%A1%E8%B6%B3a1%3D1%2C2Sn%3D2an%5E2%2B%EF%BC%88an%EF%BC%89-1%EF%BC%881%EF%BC%89%E6%B1%82an%EF%BC%882%EF%BC%89bn%3Dan%2F2%5En%2C%E6%B1%82%EF%BD%9Bbn%EF%BD%9D%E7%9A%84%E8%B0%A6n%E9%A1%B9%E5%92%8C)
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