名校
解题方法
1 . 已知等差数列
的前
项和为
,
,
,则
的值为( )
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afbfd6b761451716ba3d7130c93497ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3cf6f2bbe20a404fea41a4d2b1c4c7.png)
A.70 | B.80 | C.90 | D.100 |
您最近一年使用:0次
2024高二·全国·专题练习
2 . 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 |
您最近一年使用:0次
3 . 等差数列
中,
,则
的公差
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfdaea1fecbbb3b35f120f621a14e609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
A.3 | B.2 | C.![]() | D.![]() |
您最近一年使用:0次
23-24高二下·全国·课前预习
4 . 等差数列通项公式的变形及推广
(1)
,
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a26b10d182d3b41ff05beea6edfdf18.png)
________ ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69421e5e6e1f03af5335ea0faa077de9.png)
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
________
,且
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65287b4936b1d642651ec534faee79ad.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a26b10d182d3b41ff05beea6edfdf18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69421e5e6e1f03af5335ea0faa077de9.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ac5b6cc698996f7aac77a0d75d02d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abb55a6ac710d45ef73be9d94340f7df.png)
您最近一年使用:0次
名校
解题方法
5 . 已知数列
的前n项和为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4e70b360f988fdbd92300ab22c4613.png)
______ .
![](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/a6a9f180622312f9d93506488abf326b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4e70b360f988fdbd92300ab22c4613.png)
您最近一年使用:0次
2024-04-18更新
|
396次组卷
|
3卷引用:2024届辽宁省抚顺市六校协作体高三下学期第三次模拟数学试卷
2024高三·全国·专题练习
6 . 已知数列
为等差数列,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b24b67d146d29e3d8f0cf94b2e76688.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d6eece21bf3d2a850ac278a19b6314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b24b67d146d29e3d8f0cf94b2e76688.png)
您最近一年使用:0次
名校
解题方法
7 . 等差数列
中,若
,
,则其公差等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66a980ae9cfbae2e223ca751031f10a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0cb78bd4e78fc95cab7ab30be76f2b8.png)
A.2 | B.3 | C.6 | D.18 |
您最近一年使用:0次
2024-03-31更新
|
963次组卷
|
3卷引用:四川省成都市树德中学2023-2024学年高二下学期3月阶段性测试数学试卷
解题方法
8 . 在数列
中,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0686e6f576ed7062f30075bbbcbd034e.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf365a978e7afc667442c9d9677a764.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441ab570147a3fedff968e4c6b58055f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0686e6f576ed7062f30075bbbcbd034e.png)
您最近一年使用:0次
2024-02-12更新
|
1017次组卷
|
5卷引用:上海市新川中学2023-2024学年高二上学期期末数学试题
上海市新川中学2023-2024学年高二上学期期末数学试题(已下线)第4章 数列(知识归纳+题型突破)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第一册)(已下线)专题02等差数列及其前n项和7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)江苏省南京河西外国语学校2023-2024学年高二下学期3月调研数学试题江西省上饶市余干县私立蓝天中学2023-2024学年高二下学期第一次月考数学试题
9 . 参考《九章算术》中“竹九节”问题,提出:一根9节的竹子,自上而下各节的容积成等差数列,最上面3节的容积共3升,最下面3节的容积共6升,则第5节的容积为__________ 升.
您最近一年使用:0次
名校
10 . 已知等差数列
中,
,则数列
的公差为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb3b7b13e91e95aef1b809bebbd47126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.4 | B.3 | C.1 | D.![]() |
您最近一年使用:0次
2024-01-27更新
|
1746次组卷
|
3卷引用:山西省朔州市怀仁市第一中学校2023-2024学年高二上学期1月期末数学试题
山西省朔州市怀仁市第一中学校2023-2024学年高二上学期1月期末数学试题(已下线)第一章 数列(单元基础检测卷)-2023-2024学年高二数学同步精品课堂(北师大版2019选择性必修第二册)湖南省株洲市第二中学2021-2022学年高二上学期第三次月考数学试卷