已知数列{an}的前n项和为Sn,且Sn=1-an(n∈N*).(1)试求{an 发布时间:2017-05-03 09:39 │ 来源:www.tikuol.com 题型:解答题 问题: 已知数列{an}的前n项和为Sn,且Sn=1-an(n∈N*).(1)试求{an}的通项公式;(2)若bn=nan(n∈N*),试求数列{bn}的前n项和Tn.
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