已知根号x,[根号f(x)]/2,根号3(x大于等于0)成等差数列.又数列{an}(an>0)中,a1=3,此数列前n项和Sn对所有大于1的正整数n都有Sn=f(S[n-1]),1.求数列{an}的第n+1项 2.若根号bn是1/a(n+1),1/an的等比中项,
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![已知根号x,[根号f(x)]/2,根号3(x大于等于0)成等差数列.又数列{an}(an>0)中,a1=3,此数列前n项和Sn对所有大于1的正整数n都有Sn=f(S[n-1]),1.求数列{an}的第n+1项 2.若根号bn是1/a(n+1),1/an的等比中项,](/uploads/image/z/2516885-53-5.jpg?t=%E5%B7%B2%E7%9F%A5%E6%A0%B9%E5%8F%B7x%2C%5B%E6%A0%B9%E5%8F%B7f%28x%29%5D%2F2%2C%E6%A0%B9%E5%8F%B73%EF%BC%88x%E5%A4%A7%E4%BA%8E%E7%AD%89%E4%BA%8E0%EF%BC%89%E6%88%90%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97.%E5%8F%88%E6%95%B0%E5%88%97%EF%BD%9Ban%EF%BD%9D%28an%3E0%29%E4%B8%AD%2Ca1%3D3%2C%E6%AD%A4%E6%95%B0%E5%88%97%E5%89%8Dn%E9%A1%B9%E5%92%8CSn%E5%AF%B9%E6%89%80%E6%9C%89%E5%A4%A7%E4%BA%8E1%E7%9A%84%E6%AD%A3%E6%95%B4%E6%95%B0n%E9%83%BD%E6%9C%89Sn%3Df%28S%5Bn-1%5D%29%2C1.%E6%B1%82%E6%95%B0%E5%88%97%EF%BD%9Ban%EF%BD%9D%E7%9A%84%E7%AC%ACn%2B1%E9%A1%B9+2.%E8%8B%A5%E6%A0%B9%E5%8F%B7bn%E6%98%AF1%2Fa%28n%2B1%29%2C1%2Fan%E7%9A%84%E7%AD%89%E6%AF%94%E4%B8%AD%E9%A1%B9%2C)
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