已知数列
满足
,
,
为数列
的前n项和.
(1)求数列
的通项公式;
(2)若
,求n的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6545b8eca1c4223ed701a199a85683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf7610e37482b8a0fcd2456e64d91e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a8eb962fe9d2fc139910e24684aa57.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f92693c8b5e2828929376a6fbb8e638.png)
2023高三·全国·专题练习 查看更多[3]
更新时间:2023-05-05 17:10:09
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(2)求数列
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【推荐2】已知数列
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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(1)求
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(2)求数列
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【推荐3】已知数列
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(1)求数列
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0dd3fb6af23def773e1b0032a4f3c5.png)
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【推荐2】已知
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【推荐1】设数列{an}(n=1,2,3…)的前n项和Sn满足Sn=2an-a3,且a1,a2+1,a3成等差数列.
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(Ⅰ)求数列的通项公式;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffdc73b5e0a58fd28bd754d1e5128314.png)
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【推荐2】在数列
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【推荐1】记关于
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的前
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【推荐2】已知数列
的前
项和为
,且
是以2为公差的等差数列.
(1)若
,求证:
是等比数列;
(2)对任意
,都有
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/366e7d3177c5c5ca2e484eca225faa65.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d1e25c7bdf31ee5705b76324fbd32a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f8b6edfb7d680d88ed991d5c552c43.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a45205d41eabb5e01b67af9257e9ea.png)
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