19-20高一·浙江杭州·期末
解题方法
1 . 设各项为正项的数列
,其前n项和为
,
.
(Ⅰ)求
的通项公式;
(Ⅱ)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/829574cf370d9825ff4de5087be908d9.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(Ⅱ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/776c2f69f516fe9bc410fec4f9476aa4.png)
您最近一年使用:0次
2 . 已知数列
中,
,点
在直线
上,
,数列
的前n项和为
,且
是
与2的等差中项.
(1)求数列
,
的通项
和
;
(2)求证:
;
(3)设
,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/2df4cb89147a85324ece512cd034bb44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23fc11a3a7592c68b20f93bdde2ed3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.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/686ece75006ad358f23314dc8a246e11.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/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95b0952c5a6e4171ede0c54302256f91.png)
(3)设
![](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)
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3 . 已知数列
的前
项和为
,
,
.
(1)求证:数列
是等差数列;
(2)若
,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/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/09beec8cddcb1705e64862beecb0fc10.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8050391385b496e9c059201e4f12600a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f20f6e12ff3be36b647eb54a438a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ef8539a7a09303a95b4e79fb9949fc.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/fbd85b79372dc6e596d465f738c3c300.png)
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2020-08-18更新
|
293次组卷
|
5卷引用:四川省三台中学实验学校2019-2020学年高一6月月考(期末适应性)数学试题
四川省三台中学实验学校2019-2020学年高一6月月考(期末适应性)数学试题广西桂林、崇左、防城港市2020届高三联合模拟考试数学(文)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)专题6-2 数列求和归类-1
4 . 已知正项等比数列
(
)中,公比
,且
,
,
.
(1)求证:数列
是等差数列.
(2)若
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda6dc559d07bc22c9a0ed1e3a6d01d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/591c8f4062164ea52d6311e593022b97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28c22529acc1235ad6a5b9a8a86345a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d052ade954749f7501b855f3a26d4f0.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fa64f8282c170ca59a1dd545a3cebcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c88a7ef007c78a93e33bd77c4396626.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
解题方法
5 . 在公差不为零的等差数列
中,
,且
成等比数列.
(1)求数列
的通项公式;
(2)设
,数列
的前
项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd33b6c5a8037b0e80ac8fb6fad412d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a76f9d33b5394ec43eecbe3a8d9c714.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8107120e073023ad75e7eaaddb1636e6.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc1f5d407c0e99344ed5f0f5926c5d22.png)
您最近一年使用:0次
名校
解题方法
6 . 已知数列
的前
项和为
,且满足
.
(Ⅰ)求证:数列
为等比数列,并求数列
的通项公式;
(Ⅱ)若数列
满足
,
的前
项和为
,求证:
.
![](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/eea993b8b4d0cc781514bd667e74971a.png)
(Ⅰ)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c895d4ce5ce82ef9b311b9369b4de11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(Ⅱ)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a8b86b3f5efb0d3e8dfa8b6435fc05.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/3860c78a8d25ac6b5c1cff5ebbd960fc.png)
您最近一年使用:0次
名校
7 . 等差数列
满足
,
,
,
成等比数列,数列
满足
,
.
(Ⅰ)求数列
,
的通项公式;
(Ⅱ)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/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d93c1ae7b22099a5d4c1c4241e5ca18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/007ec259b3bbda9bb4dd29b77fceac0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03a6121deae18309772b75713b70163e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb27cc29c836ab7b82ad4a3acde8a3f5.png)
(Ⅰ)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(Ⅱ)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a99ac43d1b48d94f888e7a976214baa4.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/c02e80983b88cdf6b540502816c87d13.png)
您最近一年使用:0次
2020-09-05更新
|
751次组卷
|
5卷引用:【新东方】杭州新东方高中数学试卷375
(已下线)【新东方】杭州新东方高中数学试卷375浙江省之江教育评价联盟2020-2021学年高三上学期8月返校联考数学试题浙江省嘉兴市第五高级中学2020-2021学年高三上学期10月月考数学试题浙江省金华市东阳中学2020-2021学年高三上学期10月阶段考试数学试题(已下线)专题6-2 数列求和归类-1
8 . 已知数列
为等差数列,且
,
.
(1)求数列
的通项公式;
(2)令
,求证数列
为等比数列;
(3)令
,求数列
的前n项和
.
![](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/2a84917c4f840f34385c1621a26e45fb.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e191086446263b7bbbd93613577c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(3)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca857b7a6a1fe09827ecaa5f4c036069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7570419336e075b85fbad77e7160a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2012·广东广州·一模
名校
解题方法
9 . 已知等差数列{an}的公差d≠0,它的前n项和为Sn,若S5=70,且a2,a7,a22成等比数列.
(1)求数列{an}的通项公式;
(2)设数列{
}的前n项和为Tn,求证:
(1)求数列{an}的通项公式;
(2)设数列{
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfce215f34f701ee7c2cd2889a50f3f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d20b356f7efd82d5a1cee6a27b5ae92.png)
您最近一年使用:0次
2020-07-26更新
|
290次组卷
|
21卷引用:安徽省六安市舒城中学2019-2020学年高一下学期第一次月考数学(理)试题
安徽省六安市舒城中学2019-2020学年高一下学期第一次月考数学(理)试题(已下线)2012届广东省广州市高三综合测试(一)文科数学试卷(已下线)2013届黑龙江省大庆铁人中学高三第三次阶段理科数学试卷(已下线)2014届广东省惠州市高三第一次调研考试理科数学试卷(已下线)2014届广东省汕头四中高三第二次月考理科数学试卷2014-2015学年广东省广州市高二下学期期末五校联考数学(文)试卷2015-2016学年吉林省吉林一中高二11月月考理科数学卷2016届吉林省吉林一中高三质检六理科数学试卷2017-2018学年人教A版高中数学必修五:单元评估验收(二)(已下线)二轮复习 【理】专题10 数列求和及其应用 押题专练安徽省六安市舒城中学2018-2019学年高二下学期期末数学(文)试题智能测评与辅导[理]-数列的综合应用宁夏回族自治区育才中学2019-2020学年高二上学期10月月考数学(文)试题宁夏回族自治区育才中学2019-2020学年高二上学期10月月考数学(理)试题2019届北京市中国人民人大附属中学高三(5月)模拟数学(文)试题广西桂林市第十八中学2019-2020学年高二下学期开学考试数学(理)试题广西桂林十八中2019-2020学年高二(下)入学数学(理科)试题吉林省蛟河市第一中学校2020-2021学年第一学期11月阶段性检测高二数学(文科)试题四川省内江市2021届高三第三次模拟数学(理)试题湖南省衡阳师范学院祁东附属中学2019-2020学年高二上学期期中数学试题(已下线)秘籍07 数列-备战2022年高考数学抢分秘籍(新高考专用)
名校
解题方法
10 . 已知数列
满足
,
,其中
.设
.
(1)求证:数列
是等差数列;
(2)求数列
的通项公式.
(3)令
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fc336b4a83bf6d66c4afcc431597f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4246613582ad4c0ba61531226bc1e3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f47f53e669af3e665f01a3462581e3.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(3)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec9d61293e0eae0273d0d35f7e5dabca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b667de0002d5ebc53b9d9c804d30d44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b69f65365b0845d14e64cad8f395f23.png)
您最近一年使用:0次