题目
题型:不详难度:来源:
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答案
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解析
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(Ⅱ)
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核心考点
试题【(本小题满分12分)递增等比数列{an}中a1=2,前n项和为Sn,S2是a2,a3的等差中项:(Ⅰ)求Sn及an;(Ⅱ)数列{bn}满足的前n项和为Tn,求的】;主要考察你对等差数列等知识点的理解。[详细]
举一反三
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