已知各项都为正数的等比数列
满足
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7de061fa9679f45a3c9af610a8c323f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d97db5bd141353ef541007332da8779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
A.6 | B.12 | C.24 | D.48 |
更新时间:2024-03-01 16:52:21
|
相似题推荐
单选题
|
较易
(0.85)
名校
解题方法
【推荐1】设等比数列
的前
项和为
,且
,则
( )
![](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/2b86ac59cbcee4030c4bb24a0d1361e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/130aab74cff7810ad14ac2480ff5b929.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
【推荐2】已知等比数列
中,
,则公比
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae540e87e58bbf015b0d6980f5292cb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
A.2 | B.-2 | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐1】函数
的图象在点
处的切线与
轴的交点的横坐标为
,其中
,若
,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac42f0a061cd4fe9db72f8717a5ab173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ab1195995441f0735988e13911b257c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/217b927efe12a98e1082ecd7f035b921.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dcd78ec8777a8e6e5b32222cdb15c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f64d5b1d831630334e494c39d0343872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed70cf593e473e304e218637b06ec9b5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
【推荐2】在等比数列{an}中,
且a8>a9,则使得
的自然数n的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e374a7f3882e3aa5a7d3f7acccc965c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da9f04105b156af8c5addfe46bfedc0c.png)
A.10 | B.9 | C.8 | D.7 |
您最近一年使用:0次