在等比数列
中,
且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6260a149136a1e7fa845fa1182b27988.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7747864dfc5fefd1248670137905d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6260a149136a1e7fa845fa1182b27988.png)
更新时间:2023-03-20 12:41:39
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较易
(0.85)
解题方法
【推荐2】设函数
且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a93eb8c15c24827856a8d37fe04bbea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc176045b60c80d335a820b16ce9009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
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