1 . 已知
为等差数列
的前n项和,若
,则数列
的通项公式为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf89e90a6e64c3c8ee46a3bb57733a36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
2022-05-19更新
|
1090次组卷
|
6卷引用:四川省大数据精准教学联盟2021-2022学年高三下学期第二次统一监测数学(文)试题
2022·全国·模拟预测
解题方法
2 . 已知数列
满足
,
且
.若对任意
,
,不等式
恒成立,则正整数
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2438f2272d7b7ab51dbbe587025a553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c00472b8a42ec38e09e777095e849722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f347f0643c8013d25ca2d88e87a44a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21bfc624d79c645c019a82e51db7d17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffcae4de347e233339d3b1d5039615b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
解题方法
3 . 如果一个数列从第二项起,每一项与它前一项的差都大于2,则称这个数列为“
数列”.已知数列
满足:
,
,则数列
的通项公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
___________ ;若
,
,且数列
是“
数列”,则t的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf1b5b5f5f9269db4e3f748bd7f5348.png)
![](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/02ce9d5623b21817dd182b9058dc271a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e657ce17ffee05d4b7589961e50cedd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61943cdc3c6c702fbff21422f83d0cb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf1b5b5f5f9269db4e3f748bd7f5348.png)
您最近一年使用:0次
4 . 给定函数
.数列
满足
.
若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9bbe98100c8067ff36ac536d043a85.png)
__________ ;
若
成等差数列,则
的取值范围为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45b0a8329427fd5c2567ae2df29d5880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a56a6d895b0b9a6ee83f09b4813641c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bcdf05eb182862aaf792f377ee47dd.png)
若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b61e77e60443532d9713458cb79258b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9bbe98100c8067ff36ac536d043a85.png)
若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f21e246a8ec5b71ebe9789b1dfcb249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
您最近一年使用:0次
5 . “中国剩余定理”又称“孙子定理”,可见于中国南北朝时期的数学著作《孙子算经》卷下中的“物不知数”问题,原文如下:今有物不知其数,三三数之剩二,五五数之剩三,七七数之剩二.问物几何?现有一个相关的问题:将1到2022这2022个自然数中被3除余2且被5除余4的数按照从小到大的顺序排成一列,构成一个数列14,29,44…,则该数列的项数为______ .
您最近一年使用:0次
2022-05-10更新
|
238次组卷
|
2卷引用:陕西省西安市周至县2022届高三下学期三模文科数学试题
6 . “物不知数”是中国古代著名算题,原载于《孙子算经》卷下第二十六题:“今有物不知其数,三三数之剩二;五五数之剩三;七七数之剩二.问物几何?”它的系统解法是秦九韶在《数书九章》大衍求一术中给出的.大衍求一术(也称作“中国剩余定理”)是中国古算中最有独创性的成就之一,属现代数论中的一次同余式组问题,已知问题中,一个数被3除余2,被5除余3,被7除余2,则在不超过4200的正整数中,所有满足条件的数的和为______ .
您最近一年使用:0次
7 . 写出同时满足下面两个性质的数列
的一个通项公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
______ .
①
是递增的等差数列;②
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7c16998c91d5d10a041d138a6acd223.png)
您最近一年使用:0次
2022-05-09更新
|
345次组卷
|
3卷引用:河南省商丘市2022届高三第三次模拟考试理科数学试题
名校
解题方法
8 . 某资料室在计算机使用中,出现如表所示的以一定规则排列的编码,表中的编码从左至右以及从上至下都是无限的,此表中,主对角线上的数字构成的数列1,2,5,10,17,…的通项公式为__________ ,编码99共出现__________ 次.
1 | 1 | 1 | 1 | 1 | 1 | … |
1 | 2 | 3 | 4 | 5 | 6 | … |
1 | 3 | 5 | 7 | 9 | 11 | … |
1 | 4 | 7 | 10 | 13 | 16 | … |
1 | 5 | 9 | 13 | 17 | 21 | … |
1 | 6 | 11 | 16 | 21 | 26 | … |
… | … | … | … | … | … | … |
您最近一年使用:0次
2022-05-08更新
|
776次组卷
|
2卷引用:山东省滨州市2022届高三二模考试数学试题
9 . 记
为数列
的前
项和,
为数列
的前
项积,已知
,若
,
,
成等比数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](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/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b048b2b4fc2b7b9d11bb65a9f1a5a12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e35eeaabd951fb09b2926807da3685b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f64696f60c533ad95dc7890eb902741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3cf6f2bbe20a404fea41a4d2b1c4c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
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解题方法
10 . 设等差数列
的前
项和为
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
______ .
![](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/526fa082e958551233ce1f9510eb6096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/185eb7967e13ada069ff64a009b07503.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
您最近一年使用:0次
2022-05-06更新
|
266次组卷
|
3卷引用:沪教版(2020) 选修第一册 单元训练 期末测试