1 . 设
,点
,
,
,
,设
对一切
都有不等式
成立,则正整数
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8630d538156ace92f03d8df0ba9148ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fe5d698f9677627ccd7346d7053478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6246fd570dfb84daa6cc295d8cb8f5a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3702bb2a6d29410dbcab04b991ff92a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8c29b297e3ec337c3139c2a1ebed1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1754eeb47f12d79e456a5ea89a9e56b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8c29b297e3ec337c3139c2a1ebed1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5f557cdb8da76b6b703d70af253625b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0261f1c24da22d34d68e3481374a2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-04-03更新
|
1570次组卷
|
10卷引用:2019届浙江省杭州市学军中学高三下学期5月模拟考试数学试题
2019届浙江省杭州市学军中学高三下学期5月模拟考试数学试题2019届浙江省衢州市第二中学高三下学期第二次模拟考试数学试题【省级联考】贵州省2019年普通高等学校招生适应性考试理科数学试题【省级联考】贵州省2019届高三普通高等学校招生适应性考试文科数学试题(已下线)专题6.4 等差、等比数列与数列求和(练)【理】-《2020年高考一轮复习讲练测》(已下线)专题17 数列的通项公式-冲刺2020高考跳出题海之高三数学模拟试题精中选萃(已下线)专题3.3 数列与函数、不等式相结合问题 -玩转压轴题,进军满分之2021高考数学选择题填空题(已下线)专题3.2 复杂数列的求和问题-玩转压轴题,进军满分之2021高考数学选择题填空题上海市中国中学2021届高三上学期期中数学试题上海市同济大学第一附属中学2023届高三下学期3月月考(质控1)数学试题
2 . 已知正项数列
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/210c457ba87675015212f2e3afe4c56c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37f396e932e0e9fb033306fe0418254b.png)
证明:
(Ⅰ)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87f7f9de977e3538466313482a2b336d.png)
(Ⅱ)
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/210c457ba87675015212f2e3afe4c56c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37f396e932e0e9fb033306fe0418254b.png)
证明:
(Ⅰ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87f7f9de977e3538466313482a2b336d.png)
(Ⅱ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5cfaac60b1f52c2fe0f57b7c206c2d.png)
您最近一年使用:0次
解题方法
3 . 已知数列
满足
.
(1)证明:
;
(2)设
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30e7342fce79bf56c3e1e9828edcc138.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/576c754e321b43024006637c528eb32c.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b920ee9bc7290c42cad42d98b4fedef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/269f5828c03a6f0e90c9e388512945cd.png)
您最近一年使用:0次
4 . 已知数列
满足
.
(1)证明:
;
(2)若对于任意
,当
时,
;
(3)若对于任意
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2603e695cff579395b5abd70a7d52ab8.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767e7de742b4dbd6efcb7e8ee6207b75.png)
(2)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f8494594299d0ecce6e1e52151f402.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/856b137a34d2d5b20671b7a3c7a29606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb813ace3f3b45fa6aa10c29ffdc1e4.png)
(3)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff4a5924d64107664a35ac38948f189.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/493754937e4906959ff0fac1efeaa0a8.png)
您最近一年使用:0次
5 . 有一个数阵排列如下:
![](https://img.xkw.com/dksih/QBM/2011/3/31/1570096570040320/1570096575389696/STEM/24117adc-825c-43f3-bad8-f85c240eeccd.png)
则第20行从左至右第10个数字为_____ .
![](https://img.xkw.com/dksih/QBM/2011/3/31/1570096570040320/1570096575389696/STEM/24117adc-825c-43f3-bad8-f85c240eeccd.png)
则第20行从左至右第10个数字为
您最近一年使用:0次
名校
6 . 我们称满足:
(
)的数列
为“
级梦数列”.
(1)若
是“
级梦数列”且
.求:
和
的值;
(2)若
是“
级梦数列”且满足
,
,求
的最小值;
(3)若
是“0级梦数列”且
,设数列
的前
项和为
.证明:
(
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2fa3ec054db237c3dc3f6785253eeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d116ca533beba0630be998d6ff1214.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930de0d297e940bbf1faab22ff70b8b2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a79c9c1e08cdce10e202984d1a228c27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feab13622a9771cccb4a0a7daf84b7cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767c9ffca27f18bd1760bc7d359f92d6.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea49f8a2b98b542b1ebb2ac813346c90.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/d7e2686595f63f1daf0e2f6ec0aea8b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
您最近一年使用:0次
2017-11-17更新
|
1305次组卷
|
4卷引用:浙江省宁波市镇海中学2018届高三下学期5月模拟考试数学试题
解题方法
7 . 已知数列
满足:
.
(1)证明:
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb11f8d571702101e97df5dfa8040249.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ef5fc9014e6fae3aae9da1b32db744.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba90fa7ea3d33afe86227e3cbcabe119.png)
您最近一年使用:0次
解题方法
8 . 已知数列
满足:
,
.
(1)求
的值;
(2)①证明:当
时,
;
②若正整数
满足
,求
的值.
![](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/8ee757f435fb078e15048d415349aad4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
(2)①证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54755945959009e745cca4db827d0182.png)
②若正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3920d9c26c50f5a3472788527e69ae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2014·浙江·一模
9 . 已知正项数列
满足:
, ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a093564f7e01d40745115a9df8bb09f.png)
(1)求通项
;
(2)若数列
满足
,求数列
的前
项和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://img.xkw.com/dksih/QBM/2014/4/29/1571695297478656/1571695303204864/STEM/a4a85e6e90aa4016a7870a78e000f510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a093564f7e01d40745115a9df8bb09f.png)
(1)求通项
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)若数列
![](https://img.xkw.com/dksih/QBM/2014/4/29/1571695297478656/1571695303204864/STEM/d9c74315c3364e5080f3f109fbe959b1.png)
![](https://img.xkw.com/dksih/QBM/2014/4/29/1571695297478656/1571695303204864/STEM/e4467fa7ec4641f98b8f901ad87dca38.png)
![](https://img.xkw.com/dksih/QBM/2014/4/29/1571695297478656/1571695303204864/STEM/d9c74315c3364e5080f3f109fbe959b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
10 . 设数列
的前
项和为
,且
,其中
是不为零的常数.
(1)证明:数列
是等比数列;
(2)当
时,数列
满足
,
,求数列
的通项公式.
![](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/ff9c334b1c8ddb9c5302f427961442f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451b1923f70f26e57c557ffe606f7016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323096463ae98535799f7131738bf35e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385275d29d8c8a7841eaeaa3dfab2cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
您最近一年使用:0次