1 . 一种掷硬币走跳棋的游戏:在棋盘上标有第1站、第2站、第3站、…、第100站,共100站,设棋子跳到第
站的概率为
,一枚棋子开始在第1站,棋手每掷一次硬币,棋子向前跳动一次.若硬币的正面向上,棋子向前跳一站;若硬币的反面向上,棋子向前跳两站,直到棋子跳到第99站(失败)或者第100站(获胜)时,游戏结束.
(1)求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ff34ff7d67be79ca2bf4aa3cdcc53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2309b06a96dca127dbf7abfeb380c11f.png)
;
(2)求证:数列![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8e5134f738fa09b1c307fe7612a4022.png)
为等比数列;
(3)求玩该游戏获胜的概率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ff34ff7d67be79ca2bf4aa3cdcc53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2309b06a96dca127dbf7abfeb380c11f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
(2)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8e5134f738fa09b1c307fe7612a4022.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07839b6e17c7a1980e1dec1f5ec06e49.png)
(3)求玩该游戏获胜的概率.
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名校
2 . 已知数列
的前
项和为
,且
,
.
(1)求证:
为等比数列,并求
的通项公式;
(2)若
,求
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/43a51a4f8499f61a01e2fcfff06057bc.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2de706dc5f0439b989273a5367f63a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2da775220f9e2352d1b953b40f0e0150.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)
您最近一年使用:0次
2019-12-13更新
|
548次组卷
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2卷引用:重庆市南开中学2019-2020学年高三上学期第二次教学质量检测数学(文)试题
名校
解题方法
3 . 已知数列
是公差
的等差数列,其前n项和为
,满足
,且
,
,
恰为等比数列
的前三项.
(1)求数列
,
的通项公式;
(2)设
,数列
的前n项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812be9806122241c476ba1db516c4823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ece4d40fbe33af0d62291e7ee29661e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c17123956415aeed67310f9ab9b3b731.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5f8ff8d09f008f30369c7ea389a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ecd7e58674c9df2ef007bb9677bc236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.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/25c2a5f8ec179b72b201c3c0a670612a.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/3819480e1e624208f729ad8653e4f24f.png)
您最近一年使用:0次
2019-12-12更新
|
995次组卷
|
4卷引用:江苏省苏州市常熟市2019-2020学年高二上学期期中数学试题
江苏省苏州市常熟市2019-2020学年高二上学期期中数学试题江苏省连云港市赣榆智贤中学2020-2021学年高二上学期9月月考数学试题(已下线)拓展二 数列求和的方法(精讲)-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)江西省上高二中2021届高三年级第五次月考数学(理)试题
4 . 数列
的前
项和为
,已知
.
(1)求数列
的通项公式;
(2)设数列
,且
,求证:
是等比数列;
(3)求
的值.
![](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/2d15421d38413470fba02adcd0d1028c.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4188680e5320653753ad0340439cb77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11fc0457ea92aab41c0a892362b9e25.png)
您最近一年使用:0次
2019-11-09更新
|
166次组卷
|
3卷引用:沪教版 高二年级第一学期 领航者 第七章 每周一练 (4)
5 . 已知数列
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea70cc7555261d92090d1c3ddb4434d.png)
,又数列
满足:
.
(1)求证:数列
是等比数列;
(2)若数列
是单调递增数列,求实数
的取值范围;
(3)若数列
的各项皆为正数,
,设
是数列
的前
项和,问:是否存在整数
,使得数列
是单调递减数列?若存在,求出整数
;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea70cc7555261d92090d1c3ddb4434d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a10c7f021444b4d80f8e0b43c16ae709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a6cedc2f9b8828da8515c679b9bdba.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211f620f60879355cd7e2148e3968a9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de777c4e44546bcfe26ad5b6bb418052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
6 . 已知数列
中,其前
项和
满足
.
(1)求证:数列
为等比数列,并求
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/3a83aa7f2c5bbe46ab63cf5289dfcead.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90205cb00b7143a8dcdd2e4cb3f190b2.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)
您最近一年使用:0次
名校
7 . 已知点列
为函数
图像上的点,点列
顺次为
轴上的点,其中
,对任意
,点
构成以
为顶点的等腰三角形.
(1)证明:数列
是等比数列;
(2)若数列
中任意连续三项能构成三角形的三边,求
的取值范围;
(3)求证:对任意
,
是常数,并求数列
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18748d66a45fc99042bb9fbfbb5ac9ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abbe323771bc92bf5767e1bd9a46b946.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd82db3485b338491db6f6905d0eb70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45edf3c46e1f381103a62fb46bf8fe1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b202a04fa92f83e54c964146d7acb99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1165edc23b5782b5942ef7e79130bb94.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1165edc23b5782b5942ef7e79130bb94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)求证:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/552ab5c94a444999c17fce3d2e80e67b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
您最近一年使用:0次
8 . 设函数
,给定数列
,其中
,
.
(1)若
为常数数列,求a的值;
(2)当
时,探究
能否是等比数列?若是,求出
的通项公式;若不是,说明理由;
(3)设
,数列
的前n项和为
,当a=1时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/506f9bda2cf47f4dfcdbedc69ec504bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dd1ad9041c24ca2fc42965e8bc01873.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee777262e7c022822af7c82a05ffd59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc8eb5b07f844fbc3f467abc80fe095f.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/ee38d583c8f8bae479f7e426a2dcd139.png)
您最近一年使用:0次
2019-05-17更新
|
698次组卷
|
2卷引用:【全国百强校】江苏省海安高级中学2018-2019学年高一下学期期中考试数学试题1
9 . 已知数列
都是由实数组成的无穷数列.
(1)若
都是等差数列,判断数列
是否是等差数列,说明理由;
(2)若
,且
是等比数列,求
的所有可能值;
(3)若
都是等差数列,数列
满足
,求证:
是等差数列的充要条件是:
中至少有一个是常数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5344eadd4711db34e3f935aedd5fb270.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8659da8209abcfda8b98555359c20ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5344eadd4711db34e3f935aedd5fb270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](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/62e567d7e9761951a266953c8d5042ac.png)
您最近一年使用:0次
10 . 已知数列{an}的前n项和为Sn,且满足Sn+n=2an(n∈N*).
(1)证明:数列{an+1}为等比数列,并求数列{an}的通项公式;
(2)若bn=nan+n,数列{bn}的前n项和为Tn,求满足不等式
的n的最小值.
(1)证明:数列{an+1}为等比数列,并求数列{an}的通项公式;
(2)若bn=nan+n,数列{bn}的前n项和为Tn,求满足不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a0a284601813fdc72580999ff8928b.png)
您最近一年使用:0次
2019-04-23更新
|
1181次组卷
|
3卷引用:【全国百强校】安徽省淮北市第一中学2018-2019学年高二上学期第四次月考数学试题
【全国百强校】安徽省淮北市第一中学2018-2019学年高二上学期第四次月考数学试题(已下线)专题8 等比数列的单调性 微点2 等比数列单调性综合训练山东省聊城市东昌府区聊城颐中外国语学校2023-2024学年高三上学期期中数学试题