在等比数列
中,如果
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0159413b0ca1a0599d8d374867a1551.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21aee4d991deae294853fae2ec0acd5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0159413b0ca1a0599d8d374867a1551.png)
更新时间:2019-03-22 15:01:46
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【知识点】 等比数列下标和性质及应用
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