在各项均为正数的等比数列
中,
,且有
,求
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c90a6788b428dcdb5b3f6cb2650287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb7147e313f9d9f67d19ecb5f499c05.png)
A.2 | B.4 | C.64 | D.128 |
更新时间:2021-09-20 10:17:04
|
【知识点】 等比数列通项公式的基本量计算
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/537adc93871ac7bd3c84f4307325509e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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