等比数列
的前n项和
,
,若
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87aa063f14fbc313d9c009138c7bc95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d03650938f935a94a360891994eb5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3e483e55782630fcaf6fea59af7e618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dda4a552a4b043d49c8946d503cecc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2018-12-13 17:23:33
|
【知识点】 前n项和与通项关系
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单选题
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名校
【推荐2】设数列设数列
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