1 . 在数列
中,
,
,且
.
(1)证明:
是等差数列.
(2)求
的通项公式.
(3)求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bae03ee4ac75dacfb026290e4207dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3938fc9093a10b040b5ed9d18c876637.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b131b7e61b149cce2c66835b067dd0.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(3)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e8b1fedcc25007ac7d454e44dfbc44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
7日内更新
|
707次组卷
|
4卷引用:内蒙古开鲁县第一中学、和林格尔县第三中学等2023-2024学年高二下学期5月月考数学试题
内蒙古开鲁县第一中学、和林格尔县第三中学等2023-2024学年高二下学期5月月考数学试题内蒙古名校联盟2023-2024学年高二下学期教学质量检测数学试题(已下线)高二数学期末模拟试卷02【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)高二数学下学期期末考点大通关真题必刷100题(2) --高二期末考点大串讲(人教B版2019选择性必修第二册)
2 . 已知等差数列
的前
项和为
,等比数列
的前
项积为
,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/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
7日内更新
|
347次组卷
|
6卷引用:内蒙古开鲁县第一中学、和林格尔县第三中学等2023-2024学年高二下学期5月月考数学试题
内蒙古开鲁县第一中学、和林格尔县第三中学等2023-2024学年高二下学期5月月考数学试题内蒙古名校联盟2023-2024学年高二下学期教学质量检测数学试题(已下线)核心考点1 数列 A基础卷 (高二期末考试必考的10大核心考点)(已下线)高二数学期末模拟试卷01【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)高二下期末考前押题卷01--高二期末考点大串讲(人教B版2019选择性必修)湖南省永州市部分学校2023-2024学年高二下学期6月质量检测卷数学试题
名校
解题方法
3 . 已知
为数列
的前n项和,满足
,且
成等比数列,当
时,
.
(1)求证:当
时,
成等差数列;
(2)求
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1afae439f6cda00e6b1fcc2bf5363ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/874781ab5711bff6ee8c9cbad5b3b3dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5d0a73f50b3e4583f1c1b6d6bf0d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
(1)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5d0a73f50b3e4583f1c1b6d6bf0d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2024-04-24更新
|
545次组卷
|
2卷引用:内蒙古赤峰市赤峰二中2023-2024学年高二下学期第一次月考数学试题
解题方法
4 . 已知正项数列
满足
(
,且
),
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1de19a41401b6fd32d88a782466e585f.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54f11c73a996bcd0aae0275d0c7b7703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28652e52c0b02a343e618935ea625cbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1de19a41401b6fd32d88a782466e585f.png)
您最近一年使用:0次
5 . 已知等差数列
的公差
,
,且
,
,
成等比数列,
为数列
的前
项和,若
对任意
恒成立,则实数
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812be9806122241c476ba1db516c4823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca7e7b23fd74e3cf89ac541cb7a5d88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a9198b05fa21f65a6fd0bce79e2ec85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9b95079ade5ac98fc651fafc489761f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.9 | C.6 | D.![]() |
您最近一年使用:0次
6 . 已知数列
中,
,
,
.
(1)求数列
的通项公式;
(2)设
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4c4eb82f6d50471103f65276177610d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a70b95c53fb6655721e2a8c61f5c2c.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28a67611bf155a4f33363cbf4ddf3ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c070cd5f1c05bd1c503a1ad986281fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2024-01-02更新
|
3073次组卷
|
5卷引用:内蒙古呼伦贝尔市满洲里远方中学2023-2024学年高二上学期12月模拟考试数学试卷
内蒙古呼伦贝尔市满洲里远方中学2023-2024学年高二上学期12月模拟考试数学试卷江西省丰城市第九中学2023-2024学年高二下学期4月月考数学试题(已下线)广东省深圳市深圳中学2024届高三一月阶段测试数学试题(已下线)专题04 数列(1)江西省赣州市南康中学2024届高三上学期七省联考考前数学猜题卷(七)
名校
7 . 等差数列
的前
项和为
,公差为
,若
,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/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcf47a600b14af3cdd8b6f186f19210.png)
A.![]() | B.![]() |
C.当![]() ![]() | D.当![]() ![]() |
您最近一年使用:0次
2023-07-08更新
|
789次组卷
|
4卷引用:内蒙古呼和浩特市内蒙古师范大学附属中学2023-2024学年高二下学期4月月考数学试卷
8 . 已知
是等差数列,其中
,
.
(1)求
的通项公式;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ce8f429a1154016b142d1376fda991.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/618715534c33e403ba189272a5fbf478.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554c4f0fbe768a9033e8ff4be6e71653.png)
您最近一年使用:0次
2023-04-23更新
|
851次组卷
|
3卷引用:内蒙古呼和浩特市内蒙古师范大学附属中学2023-2024学年高二下学期4月月考数学试卷
2023·全国·模拟预测
名校
9 . 已知等差数列
的前
项和为
,
,
,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/43d799987e7af9561215baf4f99c7777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c864fb2f798930481536e52374adc6c.png)
A.当![]() ![]() | B.当![]() ![]() |
C.数列![]() ![]() | D.数列![]() |
您最近一年使用:0次
2023-03-18更新
|
1676次组卷
|
5卷引用:内蒙古巴彦淖尔市衡越实验中学2022-2023学年高二下学期第二次学业诊断理科数学试题
内蒙古巴彦淖尔市衡越实验中学2022-2023学年高二下学期第二次学业诊断理科数学试题(已下线)2023年普通高等学校招生全国统一考试数学猜题卷(六)北京市中国人民大学附属中学2023届高三统练(4)数学试题(已下线)专题14 数列(1)(已下线)专题6.1 等差数列及其前n项和【九大题型】
10 . 已如数列
的前
项和为
,
,当
时,
.
(1)证明数列
为等差数列,并求
;
(2)求数列
的前
项和为
.
![](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/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9160fbabd8fd7851af4afe3dd7f22037.png)
(1)证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8050391385b496e9c059201e4f12600a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3e0f33f160898af3fd21ac2c342271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2023-02-22更新
|
1894次组卷
|
3卷引用:内蒙古巴彦淖尔市衡越实验中学2022-2023学年高二下学期第一次学业诊断测试数学(文科)试题