名校
解题方法
1 . 在数列
中,若
,则
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f44656fcd82f07709972eb622cc463ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4a13bd477c3e49fee39ee687d6323cb.png)
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2024-03-06更新
|
483次组卷
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2卷引用:河南省南阳市卧龙区博雅学校2023-2024学年高二下学期开学考试数学试题
2 . 已知
是数列
的前
项和,
,且
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f9aeee87d376328c4ff288a1758a490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0feb5a92d8a9d2cd65edeb97be2e3fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5dd1562138ab60802c33a17a8d7867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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2024-03-03更新
|
290次组卷
|
4卷引用:福建省泉州市2023-2024学年高二上学期1月期末教学质量监测数学试题
福建省泉州市2023-2024学年高二上学期1月期末教学质量监测数学试题河南省南阳市第一中学校2023-2024学年高二下学期第一次月考数学试题(已下线)专题04数列求和的6种常考题型归类【好题汇编】-备战2023-2024学年高二数学下学期期末真题分类汇编(北师大版2019选择性必修第二册)(已下线)专题01求数列通项公式9种常考题型归类【好题汇编】-备战2023-2024学年高二数学下学期期末真题分类汇编(北师大版2019选择性必修第二册)
3 . 已知数列
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
__________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74d2c825dc64bc3c651fa482ce44d83b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
您最近一年使用:0次
4 . 我国度量衡的发展有着悠久的历史,战国时期就已经出现了类似于砝码的、用来测量物体质量的“环权”.已知9枚环权的质量(单位:铢)从小到大构成项数为9的数列
,该数列的前3项成等差数列,后7项成等比数列,且
,
,
,则数列
所有项的和为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac52eacb833a7a2d4c5d07340d2365d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d586fc54570182e0d36dd9f6d66095.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
5 . 已知数列
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a061a75239e9b426f22c98a77d86f54e.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec23966eecb1776439b37ff7c6edc667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a061a75239e9b426f22c98a77d86f54e.png)
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6 . 已知等差数列
满足
,则数列
的通项公式为__________ ;记数列
的前
项和为
,若
恒成立,则实数
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ab4da8ff77f1901117d77327ad3f952.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c6c74d1c24b2c8b81cbd6265c7767a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ca0fa76b34fd44c15923c974239cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-02-28更新
|
286次组卷
|
3卷引用:河南省新高中创新联盟TOP二十名校2023-2024学年高二下学期2月调研考试数学试题
解题方法
7 . 已知正项 等比数列
,
,且
,
,
成等差数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd21f4cb498101d26b4aaa2e1a6addc.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b42a580c957be7f0fe5e0de6693d69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd21f4cb498101d26b4aaa2e1a6addc.png)
您最近一年使用:0次
解题方法
8 . 任意
,有
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48402431243ccf5e7e01edd64a0b8c3.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7368766dc6206018032c846a0b7ac91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc495172f6a0522ccd4f8d5122e6423.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48402431243ccf5e7e01edd64a0b8c3.png)
您最近一年使用:0次
解题方法
9 . 已知数列
满足
,数列
是公差为1的等差数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a03328a25e4999b3f2e9afee19b21e94.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70df8a0472e58ff8ba1161b36b15938c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d44b411ed9a1c7795d74d394fb5dd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a03328a25e4999b3f2e9afee19b21e94.png)
您最近一年使用:0次
解题方法
10 . 如图所示的数阵由数字1和2构成,将上一行的数字1变成1个2,数字2变成2个1,得到下一行的数据,形成数阵,设
是第
行数字1的个数,
是第
行数字2的个数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d0c134f914b44e181db0154e3be7567.png)
__________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/769b2937ed0d97c73ffe527bbf344e4c.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d0c134f914b44e181db0154e3be7567.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/769b2937ed0d97c73ffe527bbf344e4c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/2ad58421-da63-4b33-ba6d-7d210ce75142.png?resizew=183)
您最近一年使用:0次
2024-02-12更新
|
150次组卷
|
2卷引用:广东省部分名校2023-2024学年高二上学期期末教学质量检测数学试题