设等差数列{an},{bn} 的前n项和Sn,Tn满足Sn/Tn=An+1/2n+7,且a3/(b4+b6)+a7/(b2+b8)=2/5,S2=6函数g(x)=1/2(x-1),且Cn=g(Cn-1)(n∈N,n>1),c1=1.(1)求An(2)求数列{an}{cn}的通项公式 3 若d=an(n为奇数);d=cn(n为偶数
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![设等差数列{an},{bn} 的前n项和Sn,Tn满足Sn/Tn=An+1/2n+7,且a3/(b4+b6)+a7/(b2+b8)=2/5,S2=6函数g(x)=1/2(x-1),且Cn=g(Cn-1)(n∈N,n>1),c1=1.(1)求An(2)求数列{an}{cn}的通项公式 3 若d=an(n为奇数);d=cn(n为偶数](/uploads/image/z/14338045-37-5.jpg?t=%E8%AE%BE%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%7Ban%7D%2C%7Bbn%7D+%E7%9A%84%E5%89%8Dn%E9%A1%B9%E5%92%8CSn%2CTn%E6%BB%A1%E8%B6%B3Sn%2FTn%3DAn%2B1%2F2n%2B7%2C%E4%B8%94a3%2F%28b4%2Bb6%29%2Ba7%2F%28b2%2Bb8%29%3D2%2F5%2CS2%3D6%E5%87%BD%E6%95%B0g%EF%BC%88x%EF%BC%89%3D1%2F2%28x-1%29%2C%E4%B8%94Cn%3Dg%28Cn-1%29%28n%E2%88%88N%2Cn%EF%BC%9E1%EF%BC%89%2Cc1%3D1.%281%29%E6%B1%82An%EF%BC%882%EF%BC%89%E6%B1%82%E6%95%B0%E5%88%97%7Ban%7D%7Bcn%7D%E7%9A%84%E9%80%9A%E9%A1%B9%E5%85%AC%E5%BC%8F+3++%E8%8B%A5d%3Dan%EF%BC%88n%E4%B8%BA%E5%A5%87%E6%95%B0%EF%BC%89%EF%BC%9Bd%3Dcn%EF%BC%88n%E4%B8%BA%E5%81%B6%E6%95%B0)
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