如果
成等比数列,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
_________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbaa87bd53b4915bd5691485cfd2ebf.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c20ff532e0aaf1e08347dfb575b7f946.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbaa87bd53b4915bd5691485cfd2ebf.png)
更新时间:2021-10-24 23:07:55
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