22-23高二上·上海·期中
解题方法
1 . 已知点
在直线
上,
为直线l与y轴的交点,等差数列
的公差为1(
).
(1)求数列
,
的通项公式;
(2)设
,求
的值;
(3)若
,且
,求证:数列
为等比数列,并求
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c6437c5e60fb22c44918407eb5c9d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9944bcd0c383c1d3d04c6ab90cacced9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a70b95c53fb6655721e2a8c61f5c2c.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77b3a20b653e1979a93f119ad40406d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd93dfc99f8df4a7053e7e3a6838394c.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7216b901691e2c6140379588988a479.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea6578afabc23f5d7041b88c3790dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eda624fa223cc191d35e23f0e6cd148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
您最近一年使用:0次
2 . 已知数列
的各项均为正数,且
,对任意的正整数
,都有
.
(1)求证:
是等比数列,并求出
的通项;
(2)设
,若数列
中去掉
的项后,余下的项组成数列
,求
;
(3)在(2)中,设
,数列
的前
项和为
,是否存在正整数
、
且
,使得
、
、
依次成等差数列,若存在,求出
的值;若不存在,请说明理由.
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3998df04d0a8ded946c3f39d545fdc7e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2de706dc5f0439b989273a5367f63a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98851ec1ca2341b0ba5972b20122a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94f9717b02a5aeefb76b86cd6911ff2f.png)
(3)在(2)中,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2739d4e88c3dedb057fee4bd223db7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667160d99fbb37feca6001a20e4e1cf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1752474698cd5466dd180df0a00ba9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
22-23高二上·浙江·期末
3 . 已知数列
满足
,
.
(1)证明数列
为等比数列,并求
的通项公式;
(2)设
,数列
的前
项和为
,若存在
,使
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac85f2734fc720360f0fc8cecad570b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683df050cafa480b6ed1103b0edad6bc.png)
(1)证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7d94406136605c5bc9cd9295d6c9fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd59ab80163c89dc77b59b376f359cb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.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/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37259220648a6fcfeed221612ed27704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2022-09-29更新
|
2119次组卷
|
7卷引用:上海市高桥中学2022-2023学年高二上学期期末数学试题
上海市高桥中学2022-2023学年高二上学期期末数学试题(已下线)高中数学 高二上-8河北省衡水市第二中学2022-2023学年高二上学期期中数学试题(已下线)第7讲 数列求和9种常见题型总结 (3)(已下线)拓展三:数列与不等式 -【帮课堂】2022-2023学年高二数学同步精品讲义(人教A版2019选择性必修第二册)(已下线)拓展四:数列大题专项训练(35道) -【帮课堂】2022-2023学年高二数学同步精品讲义(人教A版2019选择性必修第二册)(已下线)专题06 数列在高考中的考法(难点,十一大题型+过关检测专训)-2023-2024学年高二数学《重难点题型·高分突破》(人教A版2019选择性必修第二册)
4 . 设,数列
满足
,数列
的通项公式为
.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb148bd8ad91c0ef275571029eee56d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eeeec6d9ce1bee1f657744582176cb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c2a5f8ec179b72b201c3c0a670612a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)设
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c1a0517a786ca4f9d74691bef7d77b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.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/cadc27a59a738b9f6ae29fa7883754a3.png)
您最近一年使用:0次
2022-12-26更新
|
426次组卷
|
3卷引用:上海市格致中学2022-2023学年高二上学期12月月考数学试题
上海市格致中学2022-2023学年高二上学期12月月考数学试题上海市宝山区顾村中学2023-2024学年高二下学期3月阶段练习数学试题(已下线)拓展三:数列与不等式 -【帮课堂】2022-2023学年高二数学同步精品讲义(人教A版2019选择性必修第二册)
解题方法
5 . 设数列
的前n项和为
,
.
(1)证明:数列
是等比数列.
(2)若数列
的前m项和
,求m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67fd0eb54561cd1df683a08cf049bfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/312fddeb97c72b0aa3a0408dfdc2f067.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f05d87eeb30421f44e70dda9e49fe72.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2228a53178b3ce08e34591a209fba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b343c968c786d3bc372185ca27d99d2c.png)
您最近一年使用:0次
2022-06-23更新
|
1885次组卷
|
4卷引用:上海市莘庄中学2023-2024学年高二上学期10月月考数学试题
上海市莘庄中学2023-2024学年高二上学期10月月考数学试题青海省海东市第一中学2022届高考模拟(一)数学(理)试题(已下线)专题26 数列的通项公式-3(已下线)专题25 等比数列及其前n项和-1
6 . 在数列
中,
,数列
满足
.
(1)求证:数列
是等比数列,并求出数列
的通项公式;
(2)数列
前n项和为
,且满足
,求
的表达式;
(3)设
,且
,记
,若
成等差数列,求所有满足条件的数对
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83749a87872bb124e02d688d9b85834c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94e22de952e2b63bb9a750a77200d77.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2de706dc5f0439b989273a5367f63a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93d834b05d860f916924e25a428507ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19eae73237562181eb9b547156f53543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682cbe4cd0d5cf5beb79d3ab89a117f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c415d913d698fe3f623b9f22cc16286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8fe2c04fcf4c26bfdc15a1ec4973b55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3b0c6d718f98fcef048ffb1e679581.png)
您最近一年使用:0次
解题方法
7 . 已知数列
的前
项和为
,且
.
(1)求证:数列
是等比数列;
(2)求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67fd0eb54561cd1df683a08cf049bfc.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/d5ae73004a33305fd866f75fb3e80c7a.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67fd0eb54561cd1df683a08cf049bfc.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdaa4dce26b0c6dc6939440c56f7de52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2021-09-09更新
|
720次组卷
|
4卷引用:第09讲 数列求通项、求和
(已下线)第09讲 数列求通项、求和河南省部分名校2021-2022学年高三上学期8月份摸底联考数学(文)试题河南省部分名校2021-2022学年高三上学期8月份摸底联考数学(理)试题(已下线)考点13 数列概念及通项公式(核心考点讲与练)-2023年高考数学一轮复习核心考点讲与练(新高考专用)
8 . 在数列
中,
,
(n为正整数).
(1)求
的通项公式;
(2)求证:
;
(3)若数列
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/2438f2272d7b7ab51dbbe587025a553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2e7155dd2318395973af4a9dd05a08.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a83a51e96bd7d0318bece4ec1bb62daf.png)
(3)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acab2aeb6fc23d30c5da93b55425caf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
您最近一年使用:0次
2022-01-21更新
|
690次组卷
|
3卷引用:上海市复兴高级中学2021-2022学年高二上学期期末数学试题
上海市复兴高级中学2021-2022学年高二上学期期末数学试题上海市松江二中2021-2022学年高二下学期3月月考数学试题(已下线)期末真题必刷压轴60题(22个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(沪教版2020必修第三册)
20-21高一·上海·假期作业
解题方法
9 . 定义在
上的函数
满足对任意
、
都有
,且当
时,有
.
(1)试判断
的奇偶性;
(2)判断
的单调性;
(3)求证
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773932788bfccf3f2a43207a159c33c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ce23d4f9f61a8b1f99d11f4cd2c1d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5efe66db991b562c73ffb16c1e585870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(1)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce9604b7baf3a6ab6d0ac8a7ef6263d.png)
您最近一年使用:0次
10 . 在数列
中,已知
,
(
).
(1)证明:数列
为等比数列;
(2)记
,数列
的前n项和为
,求使得
的整数n的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b308745d2ce6e629d71f948dc99a49d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dcd7900a71f381aa6f57e25a50873d7.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a2da6f61ddb9e855ff2643a62408a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b39df5b571eff9dc04727f1cf4ca13.png)
您最近一年使用:0次
2021-09-08更新
|
1519次组卷
|
4卷引用:上海市实验学校2023届高三下学期开学考试数学试题
上海市实验学校2023届高三下学期开学考试数学试题重庆市西南大学附属中学2022届高三上学期开学考试数学试题(已下线)2022年全国新高考II卷数学试题变式题9-12题(已下线)2022年全国新高考II卷数学试题变式题17-19题