名校
1 . 已知数列
是等比数列,
为其前
项和,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/988a118fe787d0e46d4cf1cbc92c6b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f657d39c6ca02f641b0e84b2ae684a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4e70b360f988fdbd92300ab22c4613.png)
A.26 | B.24 | C.18 | D.12 |
您最近一年使用:0次
2021-08-09更新
|
945次组卷
|
7卷引用:吉林省洮南市第一中学2022-2023学年高二下学期阶段性考试数学试题
名校
2 . 在公差为1的等差数列
中,已知
,
,若对任意的正整数
,
恒成立,则实数
的取值范围是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e076d53e0fab96afda46ff7ac1689dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbb6b45ecc2d4141fb3c4a9bdd90054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7410f298e73925bb8220852557aca398.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-01-05更新
|
288次组卷
|
4卷引用:吉林省通榆县第一中学校2024届高三上学期第二次质量检测数学试题
3 . 已知点
在圆
和圆
的公共弦上,则
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001bb1de202f1ef0bb4fedcef616736b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9ab11ba6b230c4309e1b899eb58daae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b13e44aa74508b9ae7bad76b9599eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57f879f6e8df7d5fb261328806260b3.png)
您最近一年使用:0次
2019-12-16更新
|
792次组卷
|
5卷引用:吉林省白城市洮南市第一中学2023-2024学年高二上学期期中数学试题