名校
解题方法
1 . 已知公差不为零的等差数列
的前
项和为
,
,
、
、
成等比数列.
(1)求
;
(2)若数列
满足:
,求数列
的前
项和
.
![](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/b1dfe5b322577f02fd19caab8cf20170.png)
![](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/bc858b7a95c5006a44067022da09f667.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb24461c81b982fb87c2a326b07696f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55db95ff8b216f0938df7fb1a42c4efe.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
2022-02-27更新
|
757次组卷
|
4卷引用:湖南省长沙市望城区第一中学2022-2023学年高二下学期期末模拟数学试题
湖南省长沙市望城区第一中学2022-2023学年高二下学期期末模拟数学试题四川省德阳市2021-2022学年高三上学期第一次诊断考试数学(文)试题(已下线)重难点02 数列-2022年高考数学【热点·重点·难点】专练(全国通用)新疆维吾尔自治区乌鲁木齐市第六十八中学2024届高三下学期2月月考数学试题
解题方法
2 . 在等差数列
中,
.
(1)求数列
的通项公式;
(2)设
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ec40ce48a08e795a8f86c1a146a4c44.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78645a6f1db0cc62f6eb7cbe92c733e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51281aba6cf9bf6022466af19a0a4bd7.png)
您最近一年使用:0次
名校
3 . 已知公差不为0的等差数列
的前
项和为
,且
,则( )
![](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/76076333e5cbdcca5df8cb5bc3d81d9e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-02-13更新
|
496次组卷
|
4卷引用:湖南省益阳市2021-2022学年高二上学期期末数学试题
名校
解题方法
4 . 已知等差数列
的公差
,且
,数列
是首项为
的等比数列,且满足
,
,
成等差数列.
(1)求数列
与
的通项公式;
(2)设数列
满足
,求证:数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5c1344592c925b273f2cb9b9e47ebbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd33b6c5a8037b0e80ac8fb6fad412d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b715e7842b95f654f16056a7c7f2abe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e82778985cd2e9f80ca7b7cabb1a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea77d8554ac448a69d6ea4c1d7a6f15.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f49dcfbbc9296ed3d21d5552897e00de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c3fec47d2dd2b8099d86c87b6e57de8.png)
您最近一年使用:0次
2022-02-04更新
|
312次组卷
|
3卷引用:湖南省长沙市宁乡市2022-2023学年高二上学期期末数学试题
名校
解题方法
5 . 若数列
是等差数列,a1=1,
,则a5=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb725e85e159c9bbc87a6181438f616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70a1088e349dd106c7fed2905ac8761b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-01-30更新
|
1350次组卷
|
9卷引用:湖南省长沙市宁乡市2022-2023学年高二上学期期末数学试题
湖南省长沙市宁乡市2022-2023学年高二上学期期末数学试题江苏省苏州市2021-2022学年高二上学期期末数学试题(已下线)期末测试卷04(测试范围:第1-5章)-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)湖北省部分重点中学2021-2022学年高二下学期3月联考数学试题江苏省无锡市江阴市第一中学2021-2022学年高二下学期寒假开学测试数学试题(已下线)高中数学 高二下-3江苏省淮安市洪泽湖高级中学2022-2023学年高二下学期期初数学试题1.2.1 等差数列及其通项公式(同步练习基础版)(已下线)易错点06 求数列的通项公式-备战2022年高考数学考试易错题(全国通用)
6 . 在等差数列
中,
,则
的公差
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16255e27c470e9467420918a087c95b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
A.5 | B.4 | C.3 | D.2 |
您最近一年使用:0次
7 . 等差数列
中,
,
,则
( )
![](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/782adaf7d9a67242f0b02c5e40b8248f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0382b4a2ab0657d2d6830bb6be2b17b6.png)
A.6 | B.7 | C.8 | D.9 |
您最近一年使用:0次
8 . 《周髀算经》中有这样一个问题:冬至、小寒、大寒、立春、雨水、惊蛰、春分、清明、谷雨、立夏、小满、芒种这十二个节气的日影子长依次成等差数列,若冬至、立春、春分的日影子长的和是37.5尺,芒种的日影子长为4.5尺,则( )
A.冬至的日影子长最长,为15.5尺 |
B.立夏比谷雨的日影子长多1尺 |
C.大寒、雨水、春分的日影子长成等差数列 |
D.清明的日影子长为8.5尺 |
您最近一年使用:0次
2022-01-28更新
|
673次组卷
|
4卷引用:湖南省张家界市2021-2022学年高二上学期期末联考数学试题
湖南省张家界市2021-2022学年高二上学期期末联考数学试题(已下线)第4章 数列(新文化30题专练)2021-2022学年高二数学考试满分全攻略(人教A版2019选修第二册+第三册)(已下线)第2讲 等差数列的通项及性质7大题型(3)1.2.1 等差数列及其通项公式(同步练习基础版)
解题方法
9 . 已知数列
为公差不为零的等差数列,
,记
为其前
项和,___________.给出下列三个条件:条件①
;条件②
成等比数列;条件③
.试在这三个条件中任选一个,补充在上面的横线上,完成下列两问的解答:
(1)求数列
的通项公式;
(2)设
,求数列
的前
项和
.
注:如果选择多个条件解答,按第一个解答计分.
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf0e0d27f291d581e1966c98afc48ab3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc54335d4de8adc7c8d5425ba9ee67f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ff1ae478b66fe968017102df2dd7cb2.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216876de04325fd250c38c485cbc34b7.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)
注:如果选择多个条件解答,按第一个解答计分.
您最近一年使用:0次
2022-01-18更新
|
368次组卷
|
2卷引用:湖南省岳阳市华容县2023-2024学年高二上学期期末监测数学试题
解题方法
10 . 等差数列
的前n项和为
,
,
.
(1)求
的通项公式;
(2)令
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd478b1ba0e42545b45d505e2e84a140.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaccf15ab6c2790515d38a9c48127c0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次