1 . 已知数列
中,
且
,则
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/ca179b51a0cff1f81d951b508a77b3ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e11a5b70e1e2e685d1783a4707872e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-01-14更新
|
1133次组卷
|
5卷引用:湖南省邵阳市第一中学2023-2024学年高二上学期期末检测数学试题
湖南省邵阳市第一中学2023-2024学年高二上学期期末检测数学试题云南省昆明市云南师范大学附属中学2023-2024学年高二上学期期末模拟测试数学试题江苏省盐城市响水中学2023-2024学年高二上学期期末数学试题(已下线)5.2.1 等差数列(4知识点+8题型+强化训练)-【帮课堂】2023-2024学年高二数学同步学与练(人教B版2019选择性必修第三册)(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)
名校
解题方法
2 . 已知
,
是方程
两个根,数列
是递增的等差数列,数列
的前n项和为
,且
.
(1)求
,
的通项公式;
(2)记
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26ec29f5cc2c855f97158fdedc2cca9.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbda66ee512174093ad133fabb97c09.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9221c0c92a526f65533cdc5400767af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2020-05-05更新
|
164次组卷
|
3卷引用:湖南省长沙市明德中学2019-2020学年高二下学期第一次月考数学试题
名校
解题方法
3 . 设等差数列
的前
项和为
,首项
,且
.数列
的前
项和为
,且满足
.
(1)求数列
和
的通项公式;
(2)求数列
的前
项和
.
![](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/f8fb74d729d87283a5d2123d6f1db1ac.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e94a9d55364fcc3e19a55be25ac2f41.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac08064920a46f07f05b0c9f477208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3bdeaf603b021a7de7a577a401fb5e.png)
您最近一年使用:0次
2020-05-03更新
|
603次组卷
|
4卷引用:湖南省长沙市明德中学2019-2020学年高三下学期3月月考数学(理)试题
名校
解题方法
4 . 在等差数列
中,
,
.
(1)求数列
的通项公式
;
(2)设
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fca2cc2768794136c1e4da47d2f0873e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd7db658e20f1a1495058f2a3b87a63.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6093e22142fd210eb7360a2c1bc8e535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.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
2020-04-20更新
|
315次组卷
|
2卷引用:A佳教育湖湘名校2019-2020学年高二下学期3月线上自主联合检测数学试题
解题方法
5 . 等差数列
的前
项的和是
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.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/aa3ae85953d54444b4715b262721f5a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 已知数列
满足
,且
.
(1)证明数列
是等差数列,并求数列
的通项公式.
(2)若
,求数列
的前
项和
.
![](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/9e208477acf2c66d0156201c33964595.png)
(1)证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc0b53ddd01ed8617540f85ce89ce82d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4460d9d414bf779412c3cc6864056a.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/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2020-01-28更新
|
1679次组卷
|
6卷引用:五岳(湖南、河南、江西)2019-2020学年高三下学期3月线上联考数学(文)试题2
五岳(湖南、河南、江西)2019-2020学年高三下学期3月线上联考数学(文)试题2安徽省阜阳市2019-2020学年高三教学质量统测数学(文科)试题五岳(湖南、河南、江西)2019-2020学年高三下学期3月线上联考数学(文)试题1(已下线)提升套餐练04-【新题型】2020年新高考数学多选题与热点解答题组合练(已下线)冲刺卷04-决战2020年高考数学冲刺卷(山东专版)(已下线)专题04 求数列的通项公式(第二篇)-备战2020年高考数学大题精做之解答题题型全覆盖
名校
解题方法
7 . 已知
是首项为1的等差数列,
是公比为
的等比数列,已知数列
的前
项和为
,则数列
的前
项和( )
![](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/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52c9237cb0b4acc568d4afb12997186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc71efc1d114d2ec03855a706356895a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2767882820f4ba0defde0e412adb747f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
8 . 已知等差数列
满足
,
.
(1)求
的通项公式;
(2)设
是等比数列
的前n项和,若
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b58721c6afd701af600bb554d8a0b14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd33b6c5a8037b0e80ac8fb6fad412d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](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/3aaee408bdec05bbdfcd4b841a331e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b16c0f703b6ee4b848262c2ceacdba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a48e81b54f78b96294295542b010dfb.png)
您最近一年使用:0次
名校
解题方法
9 . 设数列
的前
项和为
,若
且当
时,
,则
的通项公式![](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/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/c4845b26056211b3846fbe974acef316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
您最近一年使用:0次
2020-05-05更新
|
2161次组卷
|
11卷引用:2019届湖南省怀化市高三第二次模拟数学(文)试题
2019届湖南省怀化市高三第二次模拟数学(文)试题2020届河北省石家庄市第二中学高三6月高考全仿真数学(文)试题2020届河北省石家庄市第二中学高三6月高考全仿真数学(理)试题(已下线)专题20数列通项公式的求解策略解题模板(已下线)第六单元 数列(A卷 基础过关检测)-2021年高考数学(理)一轮复习单元滚动双测卷(已下线)专题16 数列的通项与求和-2020年高考数学(文)母题题源解密(全国Ⅰ专版)(已下线)第21练 数列的概念及其表示-2021年高考数学(理)一轮复习小题必刷(已下线)专题4.1 数列的概念-2020-2021学年高二数学同步课堂帮帮帮(人教A版2019选择性必修第二册)(已下线)辽宁省盘锦市辽河油田第一高级中学高二下学期期末数学试题(已下线)专题01 数列求通项(数列的前n项和与第n项的关系)-【解题思路培养】2022年高考数学一轮复习解答题拿分秘籍(全国通用版)云南省曲靖市曲靖一中麒麟学校2021-2022学年高二上学期期末过关卷三(A卷)数学试题
10 . 已知等差数列
的前
项和为
,且
,
,则数列
的前99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/ced4e381e8c3336848b8c436dbc584f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36183db0759eec0e108274d229fcd00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba57c83d526ac308d1461e80fcca9f36.png)
您最近一年使用:0次
2020-03-10更新
|
1036次组卷
|
3卷引用:湖南省长沙市浏阳市2019-2020学年高二上学期期末数学试题
湖南省长沙市浏阳市2019-2020学年高二上学期期末数学试题(已下线)专题08 数列求和-2020-2021学年高二数学数列专题复习课(人教A版2019选择性必修第二册)广东省深圳市福田中学2024届高三上学期第一次月考数学试题