名校
解题方法
1 . 已知数列是等差数列,若
,
,且数列
的前
项和
,有最大值,当
时,
的最大值为( )
A.20 | B.17 | C.19 | D.21 |
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2023-07-21更新
|
689次组卷
|
6卷引用:专题08 数列(5大易错点分析+解题模板+举一反三+易错题通关)
(已下线)专题08 数列(5大易错点分析+解题模板+举一反三+易错题通关)(已下线)第4.2.2讲 等差数列前n项和的应用(第2课时)-2023-2024学年新高二数学同步精讲精练宝典(人教A版2019选修第二、三册)四川省成都市成都市石室中学2021-2022学年高一下学期期末数学试题(已下线)第3课时 课中 等差数列的前n项和福建省福州第八中学2024届高三上学期期中考试数学试题(已下线)4.2.2 等差数列的前n项和公式(8大题型)精练-2023-2024学年高二数学题型分类归纳讲与练(人教A版2019选择性必修第二册)
2 . 已知数列
的前
项和为
,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/2815b24f5a89be7ae53aed93182e8988.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eba83359167d8ca8c9eafa8a23f34a92.png)
A.![]() |
B.数列![]() |
C.数列![]() ![]() |
D.![]() ![]() ![]() |
您最近一年使用:0次
2023-07-14更新
|
555次组卷
|
3卷引用:模块四 专题2 暑期结束综合检测2(基础卷)
3 . 在等差数列
中,若
,
,则当
的前
项和最大时,
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/366dfedff1a1a96ec27650375b680059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/768fef3a7ee776a663424916c1fa968c.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/b6a24198bd04c29321ae5dc5a28fe421.png)
A.5 | B.6 | C.7 | D.8 |
您最近一年使用:0次
2023-07-10更新
|
744次组卷
|
4卷引用:【北京专用】专题01数列(第一部分)-高二上学期名校期末好题汇编
【北京专用】专题01数列(第一部分)-高二上学期名校期末好题汇编(已下线)专题01 等差数列4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(北京专用)北京市西城区2022-2023学年高二下学期期末考试数学试题江苏省扬州市宝应县曹甸高级中学2024届高三上学期第三次月考数学试题
4 . 若数列
满足
,
,则数列的通项公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
______ ,设
为数列
的前
项和,那么当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
______ 时
的值最小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6360c297654060957b22138c024ea253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e81662ea9d11ca26de8610d2c2b832.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.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/0f3cb8d72bb2e281b943b3b430138ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
名校
解题方法
5 . 已知等差数列
的前n项和为
,
,
,则
取得最大值时n的值为__________ .
![](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/1b59a6850258e6025e6c155808b7c1fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f36463fd0688d3ed167f91a35c6cd18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
6 . 在等差数列
中,已知
,且
,则当
取最大值时,
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/390636a89883bd64bf8da9bf8654aff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b996470ff3567eafc43231210c1c7c8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
A.10 | B.11 | C.12或13 | D.13 |
您最近一年使用:0次
7 . 设等差数列
的前
项和为
,且满足
,
,则下列说法正确的是( )
![](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/2dd2b09ae835d08413aa162bf895c037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3256435606d3584e201f592438ccb0a.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
8 . 设等差数列
的前n项和为
,若
,
,则n=________ 时,
有最小值为 ________ .
![](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/630df1e98d73e9c43bd8378991534dd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae5252f557365b8bc67784f0bc38d212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
名校
解题方法
9 . 已知
为等差数列,前
项和为
,
,公差d = −2 ,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/54b71ef6cb9c5d494692d40a9ef279f0.png)
A.![]() ![]() |
B.当n = 6或7时,![]() |
C.数列![]() |
D.当n≤2023时,![]() ![]() |
您最近一年使用:0次
2023-06-17更新
|
1174次组卷
|
6卷引用:第六章 数列(测试)
(已下线)第六章 数列(测试)(已下线)第02讲 等差数列及其前n项和(练习)(已下线)模块二 专题6《数列》单元检测篇 A基础卷 (人教A)安徽省安庆市桐城中学2023届高三下学期第二次模拟数学试卷湖南省长沙市第一中学2022-2023学年高二下学期期末数学试题(已下线)第03讲 4.2.2等差数列的前 项和公式(3)
名校
10 . 已知
是等差数列,其前n项和为
,则下列结论一定正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb6a393f8f5ddb609ac7828d09fc7304.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次