设
为公比
的等比数列,若
和
是方程
的两根,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292bc40b3d7ae71c6dfc7b5c3dd318d5.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda6dc559d07bc22c9a0ed1e3a6d01d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9efb00a1d356c66437b734e20529e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320e9b39e5e8d0c2bd9f55065679b159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195141d3696542d669106c70b8ea0824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292bc40b3d7ae71c6dfc7b5c3dd318d5.png)
2007·重庆·高考真题 查看更多[4]
2007年普通高等学校招生全国统一考试理科数学卷(重庆)(已下线)2013届天津市天津一中高三第二次月考文科数学试卷北京市东城十一中2016-2017学年高一下学期期中考试数学试题(已下线)专题7 等比数列的性质 微点1 等比数列项的性质
更新时间:2016-11-30 07:43:15
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【知识点】 等比数列通项公式的基本量计算
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【推荐1】设
为等比数列
的前
项和,已知
,
则公比为
为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3c21126aa298398daf8e5f388e4531a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0b9b2df3c08f917a0fa4ccad88d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
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(0.85)
名校
【推荐2】已知等比数列
的前
项和为
,且满足
成等差数列,则数列
的公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
______ ,如果
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9620357ea5be4037cfdccd09a27d3862.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f24ce436a9b2f3a8154fb5f819a56f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9620357ea5be4037cfdccd09a27d3862.png)
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