已知各项均为正数的等比数列
满足
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d5e843cfe17282fa3b78e5ab405bca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32df333ec0e98d41112a262b077a0f59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebce85ea9bc18815ef8887057030a63.png)
A.2 | B.4 | C.8 | D.16 |
22-23高二下·北京·期中 查看更多[3]
更新时间:2023-06-14 16:34:38
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【推荐1】已知各项为正数的等比数列{an}中,a2=1,a3a7=64,则公比q=( )
A.2 | B.3 | C.4 | D.5 |
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【推荐2】已知等比数列
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41a1f807f3cc22e21e5d16acb455b09c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e21ed9540268c4ae41aa89eb74139f1.png)
A.-20 | B.-30 | C.-40 | D.-60 |
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【推荐1】已知等比数列
的公比为
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa72e890c07465c73c6f4c9d9476e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebce85ea9bc18815ef8887057030a63.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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