名校
解题方法
1 . 已知函数
.
(1)若
在区间
上单调递增,求a的取值范围;
(2)证明:
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae48272779f294b8dd0b74ec94d0422.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1522e9d83de2b82983105a0fb3468f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83fd0c13ff68c422a80054b285ad6c0.png)
您最近一年使用:0次
2022-05-27更新
|
1328次组卷
|
3卷引用:名校联盟山东省优质校2022届高三毕业班5月模拟考试数学试题
解题方法
2 . 已知等比数列
的前
项和为
,
,
.数列
的前
项和为
,且
,
.
(1)分别求数列
和
的通项公式;
(2)若
,
为数列
的前
项和,是否存在不同的正整数
,
,
(其中
,
,
成等差数列),使得
,
,
成等比数列?若存在,求出所有满足条件的
,
,
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07404ab51f404f9411f79bd4f1fde654.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/2955370028ae5a872079c12bfedc3b4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96f4aaea63f5ed002251eab217a9a86f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b8d543c7d503fc1073503fc1d52faa.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/385275d29d8c8a7841eaeaa3dfab2cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab01dd4084e2d233f3a8a1de277f1748.png)
(1)分别求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07404ab51f404f9411f79bd4f1fde654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b8d543c7d503fc1073503fc1d52faa.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bd58bdf57dcd9496d5d273ac764123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ddad3d9fdb5e9951b6a1c31f9a72a71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3363b34c30552a3dc76b2f66fe5288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c10d8295cb4e4fe9284f59d86442d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be9d20e9994857aefb65077b666a6a01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69501a69461df9471c11e93450d14164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
您最近一年使用:0次
2021-01-31更新
|
553次组卷
|
5卷引用:山东省烟台市2020-2021学年高二上学期期末数学试题
山东省烟台市2020-2021学年高二上学期期末数学试题(已下线)专题09 《数列》中的存在性问题-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)江西省新余市2021-2022学年高二上学期期末数学(理)试题2023版 湘教版(2019) 选修第一册 过关斩将 第1章 综合拔高练(已下线)广东省2022届高三一模数学试题变式题17-22
3 . 已知
是由非负整数组成的无穷数列,该数列前n项的最大值记为
,第n项之后各项
,
…的最小值记为
,
.
(1)若
为2,1,4,3,2,1,4,3…,是一个周期为4的数列(即对任意n∈N*,
),写出
的值;
(2)设d为非负整数,证明:
(n=1,2,3…)的充分必要条件为
为公差为d的等差数列;
(3)证明:若
,
(n=1,2,3…),则
的项只能是1或2,且有无穷多项为1.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090426eb29836bc30c006b3739c08057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39222f0687c9124bddb35544bcc7798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f5c583c98a1fd516c6ceaa60b55dec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8c4312e4b482794178f8b34e61a1302.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a662a381e0867ce9d871c7a8e71f0d37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07ed9fa2d3ae8c7d15b7da794aff4c62.png)
(2)设d为非负整数,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318108e4221f00c6d3256751df684a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)证明:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f99489791db717b082bd96abb88c55e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
2016-12-02更新
|
2603次组卷
|
6卷引用:山东省日照市五莲县第一中学2024届高三第三次模拟考试数学试题