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数学
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设A1= 2,数列{1+2An}是公比为2的等比数列,则A6=
人气：484 ℃ 时间：2020-07-02 20:43:02
解答
1+2A1=1+2X2=5
1+2A6=5X2^(6-1)=160
所以,A6=79.5
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