名校
解题方法
1 . 设数列
的前
项和为
,若
为常数,则称数列
为“吉祥数列”.已知等差数列
的首项为2,且公差不为0,若数列
为“吉祥数列”,则数列
的通项公式为( )
![](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/c65899c430166e3edd16a0f01fb49cf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-12-15更新
|
590次组卷
|
3卷引用:山东省菏泽市2021-2022学年高三上学期期末数学试题B
2 . 已知等差数列
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/e0e29d972ba27bf676989a5abfb51a40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30eb42578f654fb61e826026d2199751.png)
A.22 | B.33 | C.44 | D.55 |
您最近一年使用:0次
3 . 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/36ba808c24aeae6a2f34b98ae5ec04ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/477b15bed35216bc57a10de1676ddc3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bba399f4cad442ac613e1334b01985.png)
A.![]() | B.![]() | C.![]() | D.2 |
您最近一年使用:0次
2022-12-19更新
|
803次组卷
|
4卷引用:山东省广饶县第一中学三校区2022-2023学年高三上学期12月月考数学试题
山东省广饶县第一中学三校区2022-2023学年高三上学期12月月考数学试题江苏省徐州市2022-2023学年高三上学期期末模拟数学试题天津市耀华中学2022-2023学年高二上学期期末数学试题(已下线)4.2.2等差数列的前n项和公式(第2课时)(分层作业)-【上好课】高二数学同步备课系列(人教A版2019选择性必修第二册)
名校
解题方法
4 . 设等差数列
的前
项的和为
,则下列结论不正确的是( )
![](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/6ee82f480e610324f59aa9e56687227a.png)
A.![]() | B.![]() |
C.![]() | D.数列![]() ![]() ![]() |
您最近一年使用:0次
2022-12-17更新
|
797次组卷
|
4卷引用:山东省济宁市邹城市2022-2023学年高三上学期期中数学试题
山东省济宁市邹城市2022-2023学年高三上学期期中数学试题福建省永春第一中学2022-2023学年高二上学期期末考试数学试题(已下线)专题6-1 等差数列,等比数列中性质应用(选填)-3(已下线)第四章 数列章末检测卷(一)-【帮课堂】2022-2023学年高二数学同步精品讲义(人教A版2019选择性必修第二册)
名校
5 . 若数列
是等差数列,首项
,公差
,则使数列
的前
项和
成立的最大自然数
是( )
![](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/12a18b739b2dbe4b49da000f3174fded.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/49763402b2f2023f0ba64c37924267d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.4039 | B.4038 | C.4037 | D.4036 |
您最近一年使用:0次
2022-12-15更新
|
491次组卷
|
2卷引用:山东省菏泽第一中学2022-2023学年高二上学期12月月考数学试题
名校
6 . 等差数列
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/def7ebd69f4ab78d43aa916bb29cee5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec6602ff9e3d8cd2dbfb584af94242a.png)
A.2020 | B.1525 | C.1515 | D.2015 |
您最近一年使用:0次
名校
解题方法
7 . 设
为等差数列
的前
项和,已知
,
,则
( )
![](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/d353bbb188aeb859fd8ae194871e8d50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e59e7a7919da1fe14892090fc893443.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
A.7 | B.8 | C.9 | D.10 |
您最近一年使用:0次
2022-12-11更新
|
743次组卷
|
7卷引用:山东省菏泽市巨野县第一中学2022-2023学年高二上学期期末数学试题
名校
解题方法
8 . 设公差不为零的等差数列
的前n项和为
,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/f0cec85af3852aa10b4f3e8abdc7a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58dd9153ebcaf0ec191eefa9ae748a35.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
9 . 已知数列
成等差数列,其前n项和为
,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/d0a238711090fa58191d820783ee194f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30eb42578f654fb61e826026d2199751.png)
A.7 | B.6 | C.5 | D.4 |
您最近一年使用:0次
2022-11-25更新
|
1167次组卷
|
4卷引用:山东省济宁市微山县第二中学2022-2023学年高三上学期期中数学试题
名校
10 . 已知等差数列
的前n项和为
,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/f9dd8d7d1a6821122cedd036ef8ecced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c587619a3f4dd2679eab0590c55a76da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30eb42578f654fb61e826026d2199751.png)
A.77 | B.88 | C.99 | D.110 |
您最近一年使用:0次
2022-11-18更新
|
1091次组卷
|
6卷引用:山东省菏泽市第三中学2022-2023学年高二上学期12月月考数学试题