1 . 已知等差数列
满足
.
(1)若
,求数列
的通项公式;
(2)若数列
满足
,
,且
是等差数列,记
是数列
的前
项和.对任意
,不等式
恒成立,求整数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4222181e829c4ad755fe45d7d770450d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9140a6eb7d00592a39355ad7b19284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2771c5f04582c545e0f9afc8a2cb9597.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/7fb542d74bd37c23564ef4377e4c026f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2771c5f04582c545e0f9afc8a2cb9597.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9d705db5cd21c903305271c0742b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2 . 已知正项数列
满足
,数列
的前n项和为
且满足
.
(1)求数列
,
的通项公式;
(2)设
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/024b983da1052ac94629d933dd8210db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e3a9bb248d5c1580b04a35bf884100.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb870137c4df39cfa17b1736b8cc85d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5228ebc2dff4cf21fdace773273e8593.png)
您最近一年使用:0次
解题方法
3 . 已知实数列{
},
|满足
.数列{
}是公差为p的等差数列,数列
是公比为p的等比数列.
(1)若
,求数列{
}的通项公式;
(2)记数列
,
的前n项和分别为
,
.若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1ecb4496261accb7611f75e9bb9037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/215c0a9a273de67b95fbbe22dcd90b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c2da88be606b116c847d0e3b7ba93a1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7acff98078cdd32804d8f1c4efbe2ddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)记数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea49f8a2b98b542b1ebb2ac813346c90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96f42e60dcbccbdbab9643d323b4398f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee5d95a2662414bf57b1449ff7a3ea27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bd7994cf5e961f9cefe77b7ef6737a1.png)
您最近一年使用:0次
名校
解题方法
4 . 已知数列
满足
,
,
,(π≈3.14)则此数列项数最多为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0862a31298d6b66de73ab3b60d645cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bd6b22c36fc8700c2b58519c6629c68.png)
A.2019项 | B.2020项 |
C.2021项 | D.2022项 |
您最近一年使用:0次
2021-11-05更新
|
925次组卷
|
4卷引用:浙江省2022届高考模拟卷数学试题(三)
浙江省2022届高考模拟卷数学试题(三)(已下线)专题07 数列的通项与数列的求和(讲)--第一篇 热点、难点突破篇-《2022年高考数学二轮复习讲练测(新高考·全国卷)》(已下线)考点23 数列的通项公式-备战2022年高考数学典型试题解读与变式江西省赣州市南康区唐江中学2022-2023学年高二下学期期中数学试题
名校
解题方法
5 . 已知数列
的前n项和为
,若
是公差为d(
)的等差数列,则( )
![](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/832fd7a51831135b6ee6a01981db250e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c3cf26670636d90d6f07d58e374fbf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-10-19更新
|
1276次组卷
|
4卷引用:浙江省2022届普通高等学校招生集英苑线上模拟考试(国庆联考)数学试题
浙江省2022届普通高等学校招生集英苑线上模拟考试(国庆联考)数学试题浙江省金华市第一中学2022届高三上学期第一次模拟考试数学试题(已下线)考点23 数列的通项公式-备战2022年高考数学典型试题解读与变式(已下线)重难点08 七种数列数学思想方法-1
解题方法
6 . 已知正项数列
满足
,且对任意的正整数n,
是
和
的等差中项.
(1)证明:
是等差数列,并求
的通项公式;
(2)设
,
为
前n项和,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cefeddf71dca8ae824328df3f0e5e1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0713d11728517b7373cb3ab9adb4b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5deda1cd6fa436beb194738f75ee1650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68ae03e7b6dfb29eec1f2fc02823bad2.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb99ee26a6509d716e90fbec947b6604.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bef15ea68cbc7939b69f4c8ac53553ca.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/a0faa9aef94ec81080679f625584cd49.png)
您最近一年使用:0次
名校
解题方法
7 . 已知数列
由首项
及递推关系
确定.若
为有穷数列,则称a为“坏数”.将所有“坏数”从小到大排成数列
,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c9362590b67bd4c13cb149878d5ca15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/223fcc7c101087f5b907d49619645240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c9362590b67bd4c13cb149878d5ca15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13892e1c5a8b5fe216a91f598d677f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9742be0f8f00612bbf90382a1be3af0.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
8 . 数列{an}是公差大于零的等差数列,a1=3,a2,a4,a7成等比;数列{bn}满足
.
(1)求数列{bn}的通项公式;
(2)记
比较cn与
(n∈N*)的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea7c3cdd565b67a92825799e6c4ab109.png)
(1)求数列{bn}的通项公式;
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/023662416c57e8524cc2aae779f4bcd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79723c05552795d638be2e4343d4af55.png)
您最近一年使用:0次
9 . 若函数
,
,
,
,在等差数列
中
,
,
,用
表示数列
的前2018项的和,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0c629a69d170965b7143b09e0a9d37c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25b2b7d20650c308afb6a12c8c7adc99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301b66237bb581a97b195640d6fe721b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940db68c09916b45e7c5cb540f3fe830.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bae03ee4ac75dacfb026290e4207dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf7d07e198723361ce253c28b9909c96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03087d95728246381e634e665685a556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf99487d7860d017c0747ff966edfd77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
10 . 若数列
满足
,且存在常数
,使得对任意的
都有
,则称数列
为“k控数列”.
(1)若公差为d的等差数列
是“2控数列”,求d的取值范围;
(2)已知公比为
的等比数列
的前n项和为
,数列
与
都是“k控数列”,求q的取值范围(用k表示).
![](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/fc329b32ecf0f0532d09a8a21343e8cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa79e4aebafc5c06259c5cb3b43acff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)若公差为d的等差数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)已知公比为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09e15be6eb86b5f1746b0036a87c9ca7.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/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2020-05-27更新
|
729次组卷
|
3卷引用:2019届浙江省高三高考模拟数学试题