若
,
,
成等比数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bb6c929109dd1e9e894d49900c671a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
更新时间:2023-03-22 15:49:10
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【知识点】 等比中项的应用
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名校
解题方法
【推荐1】等差数列
的首项为1,公差不为0.若
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填空题-单空题
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较易
(0.85)
解题方法
【推荐2】设
,若
是
的等比中项,则
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![](https://img.xkw.com/dksih/QBM/2017/1/7/1619445288878080/1619445289189376/STEM/8a568a1d67a84a3b9e4024ba492af811.png?resizew=75)
![](https://img.xkw.com/dksih/QBM/2017/1/7/1619445288878080/1619445289189376/STEM/0cdb71a38ae64f4cae1bfecb55c237d3.png?resizew=24)
![](https://img.xkw.com/dksih/QBM/2017/1/7/1619445288878080/1619445289189376/STEM/663f1873725747afbcaf683eaf7bfc3d.png?resizew=47)
![](https://img.xkw.com/dksih/QBM/2017/1/7/1619445288878080/1619445289189376/STEM/33f0eb660fed44008256b1c626ca5f52.png?resizew=41)
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