名校
解题方法
1 . 已知数列
满足
.
(1)求数列
的通项公式;
(2)设
,数列
的前n项之和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ed76b5ad8b953d10139c874f6f1e6c.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36925e53ab12172c7616b6d64b608b16.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/3cf4cea13f3c0a934a3be5a3d834774f.png)
您最近一年使用:0次
2021-08-26更新
|
1793次组卷
|
4卷引用:山西省怀仁市2020-2021学年高二下学期期中数学(理)试题
名校
解题方法
2 . 已知正项数列
的前
项和
,满足
.
(1)求数列
的通项公式;
(2)求证:
.
![](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/6a62465a407fc04934a03c90892afb93.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b966e32b97af94c73ffd7c4fbbe66b0f.png)
您最近一年使用:0次
2021-08-19更新
|
382次组卷
|
4卷引用:山西省朔州市怀仁市2020-2021学年高二下学期期末数学(文)试题
山西省朔州市怀仁市2020-2021学年高二下学期期末数学(文)试题山西省朔州市怀仁市2020-2021学年高二下学期期末数学(理)试题(已下线)4.2 等差数列-2021-2022学年高二数学尖子生同步培优题典(苏教版2019选择性必修第一册)四川省内江市市中区第六中学2021-2022学年高二上学期创新班入学考试数学试题
解题方法
3 . 已知数列
满足
,
,
(
,
).记
.
(1)证明:数列
是等比数列.
(2)求数列
的前n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/ed425fe0d43cddd48ddcdd43a0a95889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeef981ab904eef0623cf7406f8f022a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bc5735838e43b7a229e8f45c9bfffb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a40142c84be68ee2918c3a8303388c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0657d4926e03c0f817cc4d12ef27f05.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cbdf425942add69d8dad05465803c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2021-12-27更新
|
636次组卷
|
3卷引用:山西省2021-2022学年高二上学期12月联考数学试题
4 . 在①
,
,
;②
;③
三个条件中任选一个,补充到下面问题中,并解答.
已知正项数列
的前n项和为
,满足____________.
(1)求数列
的通项公式
;
(2)设
,
为数列
的前n项和,证明:
.
注:若选择不同的条件分别解答,则按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061cd3aa54e00d83b9248e1b46903641.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7def23f30138e0b7c4c1e498d6903a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cb9c1554115a055c140ac5683a3a8f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ec677678a0bf228876d26ed02766cc.png)
已知正项数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3c5781afc9e1158f9f6518ef6f42ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02e80983b88cdf6b540502816c87d13.png)
注:若选择不同的条件分别解答,则按第一个解答计分.
您最近一年使用:0次
2021-12-28更新
|
1745次组卷
|
4卷引用:山西省运城市康杰中学2021-2022学年高二下学期开学摸底数学试题
山西省运城市康杰中学2021-2022学年高二下学期开学摸底数学试题广东省2022届高三上学期一轮复习联考(四)数学试题(已下线)解密09 数列前n项和及其应用(讲义)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(新高考专用) 山东省2022届高三上学期一轮复习联考(四)新高考数学试题
解题方法
5 . 已知等差数列
的公差为d,前n项和为
,数列
为递增的等比数列,公比为q,前n项和为
,且
.
(1)求数列
的通项公式;
(2)设
的前n项和为
,证明:
.
![](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/092c794d71dd9f51b5fce4068f095dba.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ac50e331f1beeef96d4226ce37879e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15526f7c892333030073b85fc3baee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cc28a47e830ce0a97a03d57b5139e5.png)
您最近一年使用:0次
6 . 已知数列
的前
项和
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea6a09b5fd4f0bc1b1e4881d8bd0a228.png)
(1)证明:数列
为等比数列;
(2)若数列
为等差数列,且
,
,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/ea6a09b5fd4f0bc1b1e4881d8bd0a228.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d17d72d1d20d385920c3d9da6bed8bb.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86801504bd014e0bdba875176fa015cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd74e0503dcef5aa2cacbdac2b6e77d.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)
您最近一年使用:0次
2021-11-21更新
|
863次组卷
|
4卷引用:山西省怀仁市第一中学2021-2022学年高二上学期期末数学(文)试题
山西省怀仁市第一中学2021-2022学年高二上学期期末数学(文)试题河南省名校大联考2021-2022学年高三上学期期中考试文科数学试题河南省2021-2022学年高三上学期期中联考文科数学试题(已下线)考点25 数列求和及其运用-备战2022年高考数学典型试题解读与变式
名校
解题方法
7 . 已知数列
的前
项和为
,且满足
,
.
(1)求数列
的通项公式;
(2)令
,记数列
的前
项和为
,证明:
.
![](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/2980317814fed19c26e0478ff4a26a93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f6000421c5370e4b89f23be199f388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfccc89f83f2af31049391057c8f525d.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/f9928e46511e601913619a427ded84a3.png)
您最近一年使用:0次
2021-04-01更新
|
1425次组卷
|
14卷引用:2020届山西省同煤二中联盟体高三3月模拟数学(文)试题
2020届山西省同煤二中联盟体高三3月模拟数学(文)试题贵州省黔东南州2018届高三下学期第二次模拟考试数学(文)试题贵州省黔东南州2018届高三下学期第二次模拟考试数学(理)试题【全国市级联考】河南省周口市2017-2018学年高二下学期期末考试数学(理)试题【全国校级联考】广东省(宝安中学、 潮阳一中、桂城中学、南海中学、普宁市第二中学、中山中学、仲元中学)2018届高三5月七校高考冲刺交流数学(文)试题安徽省蚌埠市第一中学2019届高三上学期期中考试数学(理)试题宁夏回族自治区银川市宁夏育才中学2019-2020学年高二上学期期中数学(理)试题宁夏育才中学2019-2020学年高二上学期期中考试数学(理)试题2020届内蒙古包钢一中高三上学期10月月考数学(文)试卷(已下线)黄金卷05-【赢在高考·黄金20卷】备战2021年高考数学(文)全真模拟卷(新课标Ⅱ卷)(已下线)黄金卷10-【赢在高考·黄金20卷】备战2021年高考数学(理)全真模拟卷(新课标Ⅱ卷)(已下线)黄金卷07-【赢在高考·黄金20卷】备战2021年高考数学(理)全真模拟卷(新课标Ⅲ卷)(已下线)突破4.5 重难点之求数列的通项公式重难点突破-【新教材优创】突破满分数学之2020-2021学年高二数学重难点突破(人教A版2019选择性必修第二册)(已下线)突破4.6 重难点之求数列的前n项和重难点突破-【新教材优创】突破满分数学之2020-2021学年高二数学重难点突破(人教A版2019选择性必修第二册)
名校
解题方法
8 . 已知数列
满足:
.
(I)求
;
(Ⅱ)求数列
的通项公式;
(Ⅲ)记
为数列
的前n项和
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f76050c6ba22dbef5f8d6a7d4509a79.png)
(I)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0158862238e250d2a2598b7d4ecd148.png)
(Ⅱ)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(Ⅲ)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7706e0dba93c9f25c28bc8b01de44b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8469db105ee9355b87446ede015cca10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1dc9d342bbfa20347eb871635b465b6.png)
您最近一年使用:0次
2020-12-26更新
|
504次组卷
|
5卷引用:山西省朔州市朔城区第一中学校2021-2022学年高二下学期开学检测数学试题
9 . 已知函数
.
(1)若
,求实数
的取值范围;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad77f5db892309c42fedf7961a7c2774.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4791dcbad6ffd77581461d49cfd9b96.png)
您最近一年使用:0次
2021-02-07更新
|
999次组卷
|
5卷引用:山西省吕梁市2021届高三上学期第一次模拟数学(理)试题
山西省吕梁市2021届高三上学期第一次模拟数学(理)试题(已下线)精做01 数列-备战2021年高考数学大题精做(新高考专用)安徽省六安市舒城中学2020-2021学年高二下学期第二次月考数学(理)试题(已下线)解密11 数列的前n项和及其应用(分层训练)-【高频考点解密】2021年高考数学(理)二轮复习讲义+分层训练(已下线)解密09 数列前n项和及其应用(分层训练)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(新高考专用)
解题方法
10 . 在数列
中,
,
(
).
(1)求
,
,
;
(2)猜想
;(不用证明)
(3)若数列
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e76a35065ee95d9a308d2b439fc57f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
(2)猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(3)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980d51ba3340a31964fbec9e6f243ca6.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/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次