已知等比数列
中,
,
,则公比
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1323c6f226d29ebf62e2c9461ce19f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73abda0b2c65194421a02d6dc1380f86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
A.![]() | B.2 | C.![]() | D.4 |
2024·湖南常德·一模 查看更多[2]
更新时间:2024-05-31 00:21:43
|
【知识点】 等比数列通项公式的基本量计算
相似题推荐
单选题
|
适中
(0.65)
名校
【推荐1】已知
为递减等比数列,且
,则
的概率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f64d5b1d831630334e494c39d0343872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c57ed849af56c17a5e41d55646fba30.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
解题方法
【推荐2】正项等比数列{an}中,存在两项
(m,n
)使得
,且
,则
+
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2320fcc6aaa1d36b49f8e03b376b80e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbb5200d36eae98c96a2fe7016d94131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/400d6acfe59f3e8cc8c7af3a20fb8902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fdcaf78e41a30864cfe42ebce79301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a60e77043cfa243c212f9e340c5f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a64e0d0f091dbd36a4cd7f03c3e5c3a.png)
A.5 | B.6 | C.7 | D.8 |
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