名校
解题方法
1 . 数列
中,
,
,数列
满足
,
:
(1)若数列
是等差数列,求数列
的前6项和
;
(2)若数列
是公差为2的等差数列,求数列
的通项公式;
(3)若
,
,求数列
的前
项的和
.
![](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/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38932dea1354cb47b3d7aa97d1c2aab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28652e52c0b02a343e618935ea625cbf.png)
(1)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a48e81b54f78b96294295542b010dfb.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6765bb7a1fe0f0cd3bd28f6cb94cba2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f053296b0f4598a8824a6e7b0c568fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b17a9b9bb8bf6bb9865e37f204da5c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6ef48976a52cc4a2be7c46a98426c0a.png)
您最近一年使用:0次
19-20高二下·上海浦东新·期中
名校
解题方法
2 . 设集合
,选择A的两个非空子集B和C,要使C中最小的数大于B中的最大数,则不同的选择方法有________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ce4a85136d079d6745304cb82f8e5b.png)
您最近一年使用:0次
3 . 定义“二元函数”如下:
;例如:
,对于奇数m,若任意
,存在
为正整数,且
(
彼此不同),满足
,则最小的正整数m的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3966fa557dd02ae0fa942956d4d3979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/378403dc180c610910ec61e5faf9bb27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa9489cb77fac183fb891b291d02009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d59a31a27f71f3351780a75bb6fd224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a9d3dc3d131c7bdc168c2d6198d158.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/575f0017700c3081f3b0adfe313fdff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc0106a86de4798c11ca5c7e672c9f6e.png)
您最近一年使用:0次
2022-06-28更新
|
544次组卷
|
4卷引用:上海市上海师范大学附属中学2022届高三上学期期中数学试题
名校
解题方法
4 . 在平面直角坐标系中,定义
(
)为点
到点
的变换,我们把它称为点变换,已知
,
,
,
是经过点变换得到一组无穷点列,设
,则满足不等式
最小正整数
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f6138fb762d7fca4c295153b716616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9979465ce76b8582067703b39a0bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a73f95353bb2782779c976a6b82737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a42795469ed8ba12729fcebd710e8795.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3a4422395ca20fe847419ec569e48b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eddbde5d269189fced4cc478908a6866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e5531913e2f170465d8df01795cd51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05c5bbac2b16b461a28d350728aee67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/595fd9d54ab549c3462bc7e2be8370a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.9 | B.10 | C.11 | D.12 |
您最近一年使用:0次
2020-06-13更新
|
1238次组卷
|
8卷引用:2020届上海市浦东新区高三三模数学试题
5 . 已知数列
满足:
,且
,设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942bd32f4bf6736d6cc3843ddc22f1fa.png)
(1)求数列
的通项公式
(2)在数列
中,是否存在连续三项依次构成等差数列?若存在,求出所有符合条件的项,若不存在,说明理由
(3)试证明:在数列
中,一定存在正整数
,使得
依次构成等差数列,并求出
之间的关系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8323901a49cac29afd7d62864f088077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92da859e6cba88630a7c847217081826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942bd32f4bf6736d6cc3843ddc22f1fa.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)在数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(3)试证明:在数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d29da8ceff0b6d7d6331d4ea83f4de36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/068618ab8e675da9e66adc8cf9caadf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc25c9a106066dbd774febd721daeb20.png)
您最近一年使用:0次
6 . 已知数列
满足
,
,且
设
的前
项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8700d361a14772a8b3e4d3331f8ce24d.png)
_________
.
![](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/c415038439c063a0bc2a24012338078c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39cd015d0960c5a2ac0e74b1400cf937.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/6a3f1f8813adcedd56b471961b2ad6a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8700d361a14772a8b3e4d3331f8ce24d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c613d9c4f2baadcad70552390da2a403.png)
您最近一年使用:0次
2022-03-23更新
|
531次组卷
|
6卷引用:4.2 等比数列(第2课时)(六大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
(已下线)4.2 等比数列(第2课时)(六大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)重庆市西南大学附属中学校2021-2022学年高二下学期第三次月考数学试题重庆市西南大学附属中学校2021-2022学年高二(广延班)下学期第三次月考数学试题(已下线)4.3.2.1 等比数列的前n项和(练习)-2022-2023学年高二数学同步精品课堂(人教A版2019选择性必修第二册)四川省成都市成华区某校2023-2024学年高二下学期4月月考数学试题(已下线)【练】 专题2 构造数列问题
解题方法
7 . 已知
为数列
的前
项和,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b83c5596cc2dbeb14988696db3136d.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/f20c98ff12e3d272ef58b106b8b68dbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b83c5596cc2dbeb14988696db3136d.png)
您最近一年使用:0次
8 . 已知数列
中的相邻两项
,
是关于
的方程
的两个根,且
.
(1)求
,
,
,
;
(2)求数列
的前
项和
;
(3)记
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7b6ecfdff9d2b29ef64d2a6f3343f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39773a450e3c30c72ead226d84e54563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e17c3925955291056e16a4e075b3a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23195d199724aea88a760a0ae35ff9b8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd71bc7e6668f90f259ad0b06dd60c2.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d51f9147b8265c0276c1f2c2659197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9a0d7150fb24be3e28ef7f0e18be93.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a742c7b44a3b6ebbbe78d5e0ad04bca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0e01c1fac9f9ed8d588d4e85c0db8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3e29cafd6334eca70149f61f34ca7c.png)
您最近一年使用:0次
2021-10-21更新
|
724次组卷
|
2卷引用:上海市复兴高级中学2021-2022学年高二上学期10月质量检测数学试题
名校
解题方法
9 . 用记号
表示
,
,其中
,
.
(1)设
,求
的值;
(2)在条件(1)下,记
,且不等式
恒成立,求实数t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71857b12f9f468ed3d6bc21868207c31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f782ffcf8817dad96fdfee42c71e02a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/469792a9e0a6ebd61dc2c8fc84667666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2928f2bf2a086d6301b5352f7ef1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3f22b4eac73e5ee8cc5391c34d9795.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13423c094861baf4b759b7f3d8c3c226.png)
(2)在条件(1)下,记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7163d6c2cdf54fcf7146a3dc09c1eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30e2e80678693b86fdc9bb94af65becd.png)
您最近一年使用:0次
19-20高一下·上海浦东新·期末
10 . 设数列
的前n项和为
,且
是6和
的等差中项,若对任意的
,都有
,则
的最小值为________ .
![](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/16d51f29158b7a14eafc5d3847f2a51d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c44f89d0c3ea15dab735d445b3cf353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe04409b13fe225707665309adb4cdde.png)
您最近一年使用:0次
2020-08-15更新
|
908次组卷
|
3卷引用:上海市华东师范大学第二附属中学2019-2020学年高一下学期期末数学试题