数列
满足
对任意
恒成立,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c6ce06c1cd6542d0bb2bedaf66b8cf.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a60687e13367ebc9706591960a6445.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c6ce06c1cd6542d0bb2bedaf66b8cf.png)
2020·上海杨浦·二模 查看更多[2]
更新时间:2020-05-20 23:26:26
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较易
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解题方法
【推荐1】已知数列{an}中,a1=2,an+1=
(n∈N*),则数列{an}的通项公式an=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e2f69e21fd6254a40f14f707e5d966.png)
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填空题-单空题
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(0.85)
名校
【推荐2】设
是数列
的前
项和,且
,则
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f7c07bd8a7dcc55e5245fff570a496f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
您最近一年使用:0次