名校
1 . 设
是等比数列,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0aa1b6583c7f8963ba753b65d7c8d6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a843062f24600d341b1033b62c49d4.png)
A.![]() | B.![]() | C.1 | D.2 |
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名校
2 . 在等差数列
中,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f657d39c6ca02f641b0e84b2ae684a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c4740129f15112fd1d0b838f61e9b2.png)
A.1 | B.2 | C.3 | D.4 |
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2024高二·全国·专题练习
3 . 在等差数列
中,已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37393a73bc9c1006711e3ef5b853453a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9bbe98100c8067ff36ac536d043a85.png)
A.![]() | B.0 | C.1 | D.2 |
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4 . 已知
,等比数列
,
,
,…,的第4项为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f2c1ec3153d6b86778f01cb90027029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2360f4c62f7f1173922e755529a00fae.png)
A.12 | B.![]() | C.9 | D.![]() |
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5 . 将数列
与
的公共项从小到大排列得到数列
,则
的前
项和为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc79fbccc2317fd6afefb7ff36eed55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffbd0951a1f31afb7688ffc9f1a5c9e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2024高二下·全国·专题练习
6 . 某射手射击所得环数
的分布列如下:
若
成等差数列,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![]() | 7 | 8 | 9 | 10 |
P | x | 0.1 | 0.3 | y |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b49e5112241378dd283ff833351dd3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d419c30ff40e9b368a3f151f639dac8f.png)
A.7.3 | B.8.9 | C.9 | D.9.4 |
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2024高三·全国·专题练习
解题方法
7 . “十二平均律”是通用的音律体系,明代朱载堉最早用数学方法计算出半音比例,为这个理论的发展做出了重要贡献.十二平均律将一个纯八度音程分成十二份,依次得到十三个单音,从第二个单音起,每一个单音的频率与它的前一个单音的频率的比都等于
.若第一个单音的频率为
,则第八个单音的频率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6baeba79bded20a82228fea93f37d4ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
8 . 如果三个数
,
,
成等差数列,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878e89b6eca35e34c863e832a2c661db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0ef98473f6ec705d80d79f3cff556b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.4 | B.3 | C.1 | D.![]() |
您最近一年使用:0次
名校
9 . 等比数列
中,
,
,则
与
的等比中项为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0e649da4afdcc00d53ec5d8c41be65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a7310d99f0c27a9d335daa42e480db1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
A.12 | B.![]() | C.![]() | D.30 |
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名校
10 . 在数列
中,
(
),若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92876fb436db9b4e97dd42b3e1f713ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd21f4cb498101d26b4aaa2e1a6addc.png)
A.2 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-04-26更新
|
501次组卷
|
4卷引用:4.1数列的概念(1)