若
,
,
成等比数列,且
,
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a5617f2a49422f9ae8f6ed903035daa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930c3cceb0c8b9c84365d70105886d7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec336faee8689281a6f6b465e7fcff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f29d5f376c75c41ae6af0c8a8565449.png)
更新时间:2019-11-09 17:07:24
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