有关高一数列的1、在数列{An}中A1=1,A(n+1)=(1+1/n)An+(n+1)/2^n.(1)求该数列的通项公式;(2)求该数列的前n项和Sn.2、数列{An}中Sn=-An-(1/2)^(n-1)+2.(1)求该数列的通项公式;(2)若Bn=(n+1)An/n,Tn=B1+B
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![有关高一数列的1、在数列{An}中A1=1,A(n+1)=(1+1/n)An+(n+1)/2^n.(1)求该数列的通项公式;(2)求该数列的前n项和Sn.2、数列{An}中Sn=-An-(1/2)^(n-1)+2.(1)求该数列的通项公式;(2)若Bn=(n+1)An/n,Tn=B1+B](/uploads/image/z/1159274-2-4.jpg?t=%E6%9C%89%E5%85%B3%E9%AB%98%E4%B8%80%E6%95%B0%E5%88%97%E7%9A%841%E3%80%81%E5%9C%A8%E6%95%B0%E5%88%97%7BAn%7D%E4%B8%ADA1%3D1%2CA%28n%2B1%29%3D%281%2B1%2Fn%29An%2B%28n%2B1%29%2F2%5En.%EF%BC%881%EF%BC%89%E6%B1%82%E8%AF%A5%E6%95%B0%E5%88%97%E7%9A%84%E9%80%9A%E9%A1%B9%E5%85%AC%E5%BC%8F%EF%BC%9B%EF%BC%882%EF%BC%89%E6%B1%82%E8%AF%A5%E6%95%B0%E5%88%97%E7%9A%84%E5%89%8Dn%E9%A1%B9%E5%92%8CSn.2%E3%80%81%E6%95%B0%E5%88%97%7BAn%7D%E4%B8%ADSn%3D-An-%281%2F2%29%5E%28n-1%29%2B2.%EF%BC%881%EF%BC%89%E6%B1%82%E8%AF%A5%E6%95%B0%E5%88%97%E7%9A%84%E9%80%9A%E9%A1%B9%E5%85%AC%E5%BC%8F%EF%BC%9B%EF%BC%882%EF%BC%89%E8%8B%A5Bn%3D%28n%2B1%29An%2Fn%2CTn%3DB1%2BB)
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