1 . 已知数列
的前n项和为
,且有
,数列
满足
,且
,前9项和为153.
(1)求数列
,
的通项公式;
(2)设
,数列
的前n项和为
,求使不等式
对一切
都成立的最大正整数k的值.
![](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/e5abafd4f39629cc8057b29cf2df9856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48ad9761cd2482d2f7c45db676e68e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f42d4e1c8ecb35727dc43510d79fea87.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/3a7c6c1bd876699c64cf7fff45952446.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae0a351e1e41f3cb0f8c0edfbd480a8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
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2023-09-15更新
|
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4卷引用:福建省三明市将乐县第一中学2023-2024学年高二上学期第三次月考数学试题
福建省三明市将乐县第一中学2023-2024学年高二上学期第三次月考数学试题黑龙江省牡丹江市第二高级中学2022-2023学年高二上学期期末数学试题(已下线)模块三 专题7 大题分类练(数列)基础夯实练 期末终极研习室(高二人教A版)(已下线)第06讲:数列求和 (必刷5大考题+5大题型)-2023-2024学年高二数学上学期《考点·题型·难点》期末高效复习(人教A版2019)
名校
解题方法
2 . 已知数列
满足:
,
,数列
是以4为公差的等差数列.
(1)求数列
的通项公式;
(2)记数列
的前n项和为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780a1b00ea3a4fec3069509041c84511.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae8aa3e510f891053e546b003d70eec2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82c65a855b1eed9c43e6829f6c3bffb.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)记数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08c9965a04c2a6de04e949a15762f372.png)
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2023-09-15更新
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3卷引用:福建省三明第一中学2024届高三上学期10月月考数学试题
名校
解题方法
3 . 定义各项为正数的数列
的“美数”为
.若各项为正数的数列
的“美数”为
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec705bd3a3896b6e799a53d8c501d036.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/960b682f983b053dc9064cf29c97e250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd4fa1084378cc890d0b35ff3a9c56ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72975772820e2660bf223a088d80116.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4f1ef7f84973ca198606a6c76a2901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec705bd3a3896b6e799a53d8c501d036.png)
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6卷引用:福建省三明市五县2022-2023学年高二上学期联合质量检测数学试题
福建省三明市五县2022-2023学年高二上学期联合质量检测数学试题(已下线)专题11 求数列的通项公式与前n项和(已下线)高考新题型-数列(已下线)期末考试押题卷01(考试范围:选择性必修第一册)-2022-2023学年高二数学新教材同步配套教学讲义(苏教版2019选择性必修第一册)云南省昆明市第五中学2023届高三上学期省测模拟数学试题(B卷)江西省宜春市丰城市第九中学2023-2024学年高二(重点班)上学期开学考试数学试题
4 . 已知数列
是等差数列,其中
,且
.
(1)求数列
的通项公式
;
(2)设
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f24b32abf4b2cb15e326063e84a3d.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4108b3f2d1b9511fc9491fd95cad21df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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2022-06-06更新
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1798次组卷
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5卷引用:福建省三明第一中学2023届高三上学期第二次月考数学试题
福建省三明第一中学2023届高三上学期第二次月考数学试题广西“三新“学术联盟2021-2022学年高二5月联考数学(文)试题广西“三新“学术联盟2021-2022学年高二5月联考数学(理)试题(已下线)第06讲 第六章 数列综合测试(测)-2023年高考数学一轮复习讲练测(新教材新高考)山东省临沂市第十九中学2022-2023学年高二上学期期末数学试题
5 . 给定三个条件:①
,
,
成等比数列,②
,③
,从上述三个条件中,任选一个补充在下面的问题中,并加以解答.
问题:设公差不为零的等差数列
的前
项和为
,且
,___________.
(1)求数列
的通项;
(2)若
,数列
的前
项和
,求证:
.
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/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f9b2392bd67dc2427bf0654ec0d7857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cecb36665ae97f385fa4ce5726d8aa8f.png)
问题:设公差不为零的等差数列
![](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/36183db0759eec0e108274d229fcd00b.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82ecbca314a76a2cc7ba40066813296.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/aae6358af7332d7609bf8d18467487d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca91cc521bd5796cac29169a3ca79d5a.png)
注:如果选择多个条件分别解答,按第一个解答计分.
您最近一年使用:0次
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5卷引用:福建省尤溪第一中学2021~2022学年高二上学期第二次月考数学试题
福建省尤溪第一中学2021~2022学年高二上学期第二次月考数学试题广东省普宁市华美实验学校2020-2021学年高二下学期第一次月考数学试题湖南省永州市2021届高三下学期二模数学试题(已下线)专题34 仿真模拟卷02-2021年高考数学二轮复习热点题型精选精练(新高考地区专用)(已下线)专题1.4 数列-结构不良型-2021年高考数学解答题挑战满分专项训练(新高考地区专用)
名校
解题方法
6 . 数列
中,
,
,
为
的前
项和.
(1)若
,求
;
(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/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/106d71d47fffa137648f8cf30309e384.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)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e645710854fb657b0bd21029f41f50d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83de9a45d9b680da8835bac1fee9c9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da72309d2507e2f5e5ed88d8cc08963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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2020-03-29更新
|
517次组卷
|
4卷引用:福建省宁化一中2019—2020学年高一下学期第二次阶段考试数学试题
名校
7 . 已知数列
满足
,且
.
(1)求证:数列
是等差数列;
(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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9ca4927266abab5f28255157274e168.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b35b20d625d7ec24531a0a6619f7683.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)
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2019-12-26更新
|
1278次组卷
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4卷引用:福建省三明市第一中学2019-2020学年高三上学期第二次月考数学试题
福建省三明市第一中学2019-2020学年高三上学期第二次月考数学试题(已下线)2020届高三12月第03期(考点06)(文科)-《新题速递·数学》广东省深圳市高级中学2019-2020学年高二上学期期末数学试题河北省冀州中学2020届高三上学期期末数学(文)试题
8 . 已知数列
是公比为2的等比数列,
.
(1)求数列
的通项公式;
(2)设
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c3ef03d10877e8ef1292eb3312617ba.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85eac93ff71f15dd01b2b9af27a7652a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
9 . 已知正项等比数列
中,
,且
成等差数列.
(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/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707fb628bbbf2a076e8736f31f044b66.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1f05dbe8974afda5709cf263863ae4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da72309d2507e2f5e5ed88d8cc08963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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2019-06-03更新
|
1620次组卷
|
2卷引用:福建省泰宁第一中学2020届高三上学期第二次阶段考试数学(理)试题
名校
解题方法
10 . 若
的前n项和为
,点
均在函数y=
的图像上.
(1)求数列
的通项公式;
(2)设
,
是数列
的前n项和,求使得
对所有
都成立的最小正整数m.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184a6d327a0d8ee359e74c2c5e2f257e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b36137931aba9d8250282ccd0e260776.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a27b515f1a285ff1286ac597cce326b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463e670d40ac857529acb9ed92f43661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
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2018-08-25更新
|
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2卷引用:福建省泰宁第一中学2019-2020学年高一下学期第一次阶段考试数学试题