1 . 在数列
中,
,其前
项和为
,满足
,其中
.
(1)设
,证明:数列
是等差数列;
(2)设
为数列
的前
项和,求
;
(3)设数列
的通项公式为
为非零整数
),试确定
的值,使得对任意
,都有数列
为递增数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.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/851afb5fa82c3e4448ac7b674d143cdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e31d5f5293de76ffd02c8125caa9eb6.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d3d55a85012933f91c5d8d27d8801d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c736c99514cff496421ce464a751dd8.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)
(3)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5849acabde722e0b9bf3ebe96571ec8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e31d5f5293de76ffd02c8125caa9eb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2aa78c96db411c9e1e939ae16de78d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
您最近一年使用:0次
2 . 已知
为正整数,数列
满足
,
,设数列
满足
.
(1)求证:数列
为等比数列;
(2)若数列
是等差数列,求实数
的值;
(3)若数列
是等差数列,前
项和为
,对任意的
,均存在
,使得
成立,求满足条件的所有整数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9645bd4d2002993b90ec6d48f9c04f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c0a4318f6ab69b80b6b0341c572972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0b1cc29cdf4fb03be6aca39229174.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb861c7302d7bb05f9a6f37ad47ac34.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)若数列
![](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/e97769855336d73371930df1f187875e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24431f390ba671b4de0d6abaeb9cf476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9caff42cb11b3e0bcbbf68aab8a956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
您最近一年使用:0次
2018高三·江苏·专题练习
3 . 设首项为1的正项数列
的前n项和为
,且
.
(1)求证:数列
为等比数列;
(2)数列
是否存在一项
,使得
恰好可以表示为该数列中连续
项的和?请说明理由;
(3)设
试问是否存在正整数
使
成等差数列?若存在,求出所有满足条件的数组
;若不存在,说明理由.
![](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/fc36e3d240737a3ff4b360f259e1f033.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/606e55241a2e145d54849129b8ffd20f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f255d0395fba51ca2d44293cca42e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f255d0395fba51ca2d44293cca42e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94aea77c9aec47135ed3c8367d4cf844.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6c3ebd92548a81cf256426e34b3c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040e97f0892f327f38d2814f3c0e9985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2fc41af0fa6ec283fcf3aa6c5102f6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e257b2b02bcd57c116841807979bbc.png)
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名校
解题方法
4 . 已知数列
中,
且
.
(1)证明:数列
为等差数列;
(2)若
,求
的取值的集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6065aaa8f3f103d1bc960da8318ce35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e21c4faa7035e2f681c824a207a49ade.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa89c6d59c41334c28c5c0c9137f9f9a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/444632358d2919f7549bd1d9fa27affc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
5 . 已知数列
的前
项的和
,点
在函数
图象上:
(1)证明:
是等差数列;
(2)若函数
,数列
满足
,记
,求数列
前
项和
;
(3)是否存在实数
,使得当
时,
对任意
恒成立?若存在,求出最大的实数
,若不存在,说明理由.
![](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/184a6d327a0d8ee359e74c2c5e2f257e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84622a31912a42657ea232e2d18e9d4d.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea48ab54d69d60e7a6dcf200aa3ae02c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7080c2fd3055d9b1966bb40a2c1aee65.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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(3)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ae78e7e7193c62ea9a195e3af6eebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f7d1ba270c17fa9944c174233246b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42f09120087df6afadde3f26c03e148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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名校
6 . 设函数
,函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
(1)当
时,解关于
的不等式:
;
(2)若
且
,已知函数
有两个零点
和
,若点
,
,其中
是坐标原点,证明:
与
不可能垂直.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e4566d9801850af9127ff36a9a27ed1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/170d2dbba0767ddfc4341d84b6dbd5ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7360ceb10622e923aed5e095a197e25b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d100c22435a23e017cfe6f535379d3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e7deb668cee7b52f8b35ae95ed4d0b.png)
![](https://img.xkw.com/dksih/QBM/2017/10/16/1796612378664960/1798700970156032/STEM/3684b02c8a3b46a3a64585c3f5b62274.png?resizew=36)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/2017/10/16/1796612378664960/1798700970156032/STEM/6b5b1ea3f5534ca981f803b13d4a62e4.png?resizew=88)
![](https://img.xkw.com/dksih/QBM/2017/10/16/1796612378664960/1798700970156032/STEM/613b394fda524513b104e08d4323c57f.png?resizew=83)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911c0a2ab5e2e85f1ad267f41cb96b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794efd8cf0cc386faa170d01f357b1c5.png)
您最近一年使用:0次
7 . 在数列
中,
.
(1)求证数列
是等比数列,并求
的通项公式;
(2)令
,求数列
的前
项和
;
(3)求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bcc7da02e19e26aafd5a6407ff01ce.png)
(1)求证数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9f70f3d85214444a44d9c476730391e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3182ae9b8c13f3e388d77117eac10d51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(3)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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名校
8 . 已知数列
满足:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46588c9ccefccb767dc97c548bc60f9d.png)
(1) 证明:数列
是等比数列;
(2) 求使不等式
成立的所有正整数m、n的值;
(3) 如果常数0 < t < 3,对于任意的正整数k,都有
成立,求t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46588c9ccefccb767dc97c548bc60f9d.png)
(1) 证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/262e981435ccaadef94143ac5729d661.png)
(2) 求使不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09a312229e8ac42ed682213bf056bb99.png)
(3) 如果常数0 < t < 3,对于任意的正整数k,都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058eb1b30dde3fc10d92bc8a005545d0.png)
您最近一年使用:0次
2018-04-15更新
|
913次组卷
|
2卷引用:上海市金山区2018届高三下学期质量监控(二模)数学试题
9 . 对于每项均是正整数的数列
,定义变换
将数列A变换成数列
.对于每项均是非负整数的数列
,定义变换
将数列B各项从大到小排列,然后去掉所有为零的项,得到数列
.又定义
.设
是每项均为正整数的有穷数列,令
.
(1)如果数列
为2,6,4,8,写出数列
;
(2)对于每项均是正整数的有穷数列A,证明:
;
(3)证明:对于任意给定的每项均为正整数的有穷数列A0,存在正整数K,当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d16b0ed0e5badee7d373e748ec171249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dba4c7f82d79d6efcfdf7177471874b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f7ccb439f9a7212c90ab2e2abe2aa66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01cb697da92064ad1d9144e4f12be365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cb0d60922f9e9e5a37b3085b59e7b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f610650fae8e1f446b736e608061a9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2569b63ebc4bd9b2334f4ef3f1fa1565.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7356ec98b600ece41f3a6b4bc26a7d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39b9d53a1b78bcd6222e3899d330a149.png)
(1)如果数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7356ec98b600ece41f3a6b4bc26a7d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed2988e435ffb7935d49569ee824262f.png)
(2)对于每项均是正整数的有穷数列A,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc4a4656523b5985571edfdd09340639.png)
(3)证明:对于任意给定的每项均为正整数的有穷数列A0,存在正整数K,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b6ba2966874d33da6b94662d7cb23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d11b12b9af98c4b0bd2a150abeb6227.png)
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10 . 已知数列
中
.
(Ⅰ)证明:
;
(Ⅱ)设数列
的前
项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/205ed7e75733718f13843542a433eda1.png)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071588dde42dd07c060f53a0ee17f1a7.png)
(Ⅱ)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.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/526462cf9eb29abe55434a819dd44cc6.png)
您最近一年使用:0次
2018-05-14更新
|
668次组卷
|
2卷引用:【全国市级联考】浙江省绍兴市2018届高三第二次(5月)教学质量调测数学试题