设等比数列
的前n项和为
,若
,且
,则λ=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d5f4b98ab349b4b60dba53d460241f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0117669b9bd4ec227288fc3a46383fd.png)
2022·青海海东·模拟预测 查看更多[5]
青海省海东市第一中学2022届高考模拟(二)数学(理)试题(已下线)专题11 数列-备战2023年高考数学母题题源解密(全国通用)(已下线)专题25 等比数列及其前n项和(已下线)6.2 等比数列(精讲)(已下线)专题25 等比数列及其前n项和-4
更新时间:2022-06-23 10:21:44
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【推荐1】在公差为
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______________
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【推荐1】已知等比数列
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________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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