已知各项均为正数的等比数列
的前n项和为
,若
,
,
成等差数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49fc129bcbb74a49dbfdb36847f3999d.png)
______ ,
最小值为______ .
![](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/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3cf6f2bbe20a404fea41a4d2b1c4c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a27c112387e56c976489fa484c0d48f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49fc129bcbb74a49dbfdb36847f3999d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/498cb7cdfb13582a36fbadbc9b8cdb52.png)
21-22高三上·河北沧州·阶段练习 查看更多[2]
更新时间:2022-05-20 18:55:42
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