名校
解题方法
1 . 等差数列
的前
项和为
,数列
是等比数列,
,
,
.
(1)求数列
和
的通项公式;
(2)设
,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/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c5a7a17a394e868e0acd1803a9ab795.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/691dcf97c0285da13f5e32af3c39b684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f534e0a975c48e492a65a9e699fcfb7f.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d17cadba2e0b38c4c3331b412125f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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2020-08-18更新
|
409次组卷
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7卷引用:2020届湖北省随州市高三下学期3月调研考试数学(理)试题
2020届湖北省随州市高三下学期3月调研考试数学(理)试题四川省阆中中学2020届高三适应性考试(二)数学(理)试题(已下线)专题17 数列综合-2020年高考数学(理)母题题源解密(全国Ⅲ专版)(已下线)专题17 数列综合-2020年高考数学(文)母题题源解密(全国Ⅲ专版)(已下线)湖北省随州市2024届高三下学期5月模拟数学试题四川省泸县第五中学2022-2023学年高三上学期期末考试数学(理)试题贵州省瓮安中学2022-2023学年高二下学期3月月考数学试题
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2 . 某同学研究如下数表时,发现其特点是每行每列都成等差数列,在表中,数37出现的次数为( )
2 | 3 | 4 | 5 | 6 | … |
3 | 5 | 7 | 9 | 11 | |
4 | 7 | 10 | 13 | 16 | |
5 | 9 | 13 | 17 | 21 | |
… |
A.6 | B.7 |
C.8 | D.9 |
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3 . 设等差数列
的前
项和为
,且
,
,则满足
的最大自然数
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/390636a89883bd64bf8da9bf8654aff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f677c81c7a11e8205339b8e4fd7be723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49763402b2f2023f0ba64c37924267d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2020-08-17更新
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2卷引用:湖北省武汉市第三中学2019-2020学年高一下学期5月月考数学试题
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4 . 若两个等差数列
的前n项和分别为An、Bn,且满足
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70199ab917bb2714f1e8bf25e27d0434.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c6d174b1e99fd0132f9d80263c7b20c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-08-17更新
|
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9卷引用:湖北省黄冈市黄梅国际育才高级中学2018-2019学年高一下学期5月月考数学试题
湖北省黄冈市黄梅国际育才高级中学2018-2019学年高一下学期5月月考数学试题广东省佛山市顺德区容山中学2018-2019学年高一下学期期中数学试题江西省宜春市奉新县第一中学2019-2020学年高一下学期第二次月考数学试题(已下线)4.2.2 等差数列的前n项和(精练)-2020-2021学年一隅三反系列之高二数学新教材选择性必修第二册(人教A版)苏教版(2019) 选修第一册 必杀技 第四章 4.2.3 课时1 等差数列的前n项和(1)(已下线)4.2.3等差数列前n项和(2)(备作业)-【上好课】2021-2022学年高二数学同步备课系列(苏教版2019选择性必修第一册)河南省开封市杞县高中2021-2022学年高二上学期第四次月考数学(文)试题江苏省宿迁中学2022-2023学年高二上学期期中数学试题(已下线)专题6-1 等差数列,等比数列中性质应用(选填)-3
5 . 已知公差不为
的等差数列
的首项
,前
项和是
,且___________ (①
、
、
成等比数列,②
,③
,任选一个条件填入上空),设
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.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/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd71bc7e6668f90f259ad0b06dd60c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/220c08a979f5ec2ce68a87a50abda02b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b170560f44bdef56b9248ffa10b1c91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a59a908969e9a775e2c99f9d35f9ec.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)
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6 . 已知等比数列
的前
项和为
,且满足
.
(1)求数列
的通项公式;
(2)若
,求数列
的前
项和
![](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/0c1c19143932cc87a6c9c0688f1a049f.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb4e138bca973f72f64014abe10237b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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2020-08-10更新
|
567次组卷
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4卷引用:湖北省十堰市第一中学2019-2020学年高一下学期4月月考数学试题
湖北省十堰市第一中学2019-2020学年高一下学期4月月考数学试题江苏省扬州市江都区邵伯高级中学2020-2021学年高二上学期10月阶段性测试数学试题(已下线)第5课时 课后 等比数列的前n项和(已下线)专题4.3 等比数列(5个考点八大题型)(3)
名校
7 . 设
分别是等差数列
的前n项和,已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/003c0dbb483778f1c9c54004e92c9cfd.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478421b81927e435cbcf5acafa89efd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa33c5a42ffccef7860e6508ca2206e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/003c0dbb483778f1c9c54004e92c9cfd.png)
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2020-08-10更新
|
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|
3卷引用:湖北省孝感市汉川市第一高级中学2019-2020学年高一下学期期末数学试题
名校
解题方法
8 . 设
是等差数列,
是等比数列.已知
,
,
,
.
(1)求
和
的通项公式;
(2)数列
满足
,设数列
的前
项和为
,求
.
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385275d29d8c8a7841eaeaa3dfab2cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24783189150628170908b684bda62b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26375c9cd80904d3a189689f996d43d4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5bb15d988ba5621bc5e0f9339b4ba51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.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/c43cd093a4db7ccca329d945748dc2c2.png)
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2020-08-10更新
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4卷引用:湖北省黄冈中学2020届高三下学期6月第三次模拟考试理科数学试题
湖北省黄冈中学2020届高三下学期6月第三次模拟考试理科数学试题(已下线)专题6-2 数列求和15种类型归纳-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)(已下线)专题6-2 数列求和归类-1辽宁省大连市第八中学2023届高考适应性测试数学试题
名校
解题方法
9 . 在①
,②
,③
这三个条件中任选一个补充在下面问题中,并解答问题.设等差数列
的前n项和为
,数列
的前n项和为
, ___________,
,
(
),是否存在实数
,对任意
都有
?若存在,求实数
的取值范围;若不存在,请说明理由.(注:如果选择多个条件分别解答,按第一个解答计分)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7b89b509cc803951b79a7ed42962217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f71d45130185df66b02bac8114e2e40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6917766709a2ff25e7d27763a3043d90.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/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caac7b237929617687ff01992dd81bbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6e2012690e5484d66c38b988906b248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64643801d05456dddce1c15f99100b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2020-08-07更新
|
600次组卷
|
7卷引用:湖南省炎德英才杯2019-2020学年高二下学期基础学科知识竞赛数学试题
名校
10 . 已知正项等比数列
的首项
,前
项和为
,且
,
,
成等差数列,则
( )
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0c5d61266f8a3c0f761ce726f9df3b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
A.8 | B.![]() | C.16 | D.![]() |
您最近一年使用:0次
2020-08-07更新
|
492次组卷
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3卷引用:湖北省荆门市龙泉中学2020届高三下学期高考适应性考试(二)数学(理)试题