真题
名校
1 . 等差数列
的前n项和为
.若
( )
![](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/3ba9e8a2aec74b3ce33f5e6b211e1623.png)
A.12 | B.10 | C.8 | D.6 |
您最近一年使用:0次
2022-11-09更新
|
1368次组卷
|
3卷引用:2007年普通高等学校招生考试数学(文)试题(安徽卷)
真题
2 . 设
为等差数列
的前
项和,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a7bf78468ca801ef305ce4f76986da1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec4d16bd52f0d868c7e19a53d768a9fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a0274223ee80e82fe86b4d8fb8066c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a7bf78468ca801ef305ce4f76986da1.png)
A.-6 | B.-4 | C.-2 | D.2 |
您最近一年使用:0次
3 . 在等差数列
中,
,前
项和
满足条件
,
(Ⅰ)求数列
的通项公式;
(Ⅱ)记
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4789cdeec7a7cb0acf834673173ca7b3.png)
(Ⅰ)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(Ⅱ)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ecd5bc382d8707579f9baa9e8d39ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.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
2016-12-01更新
|
1098次组卷
|
4卷引用:2006年普通高等学校招生考试数学(文)试题(安徽卷)
2006年普通高等学校招生考试数学(文)试题(安徽卷)(已下线)2011-2012学年江苏省启东中学高一第二学期第一次月考数学试(已下线)2012—2013学年河南省南阳一中高二第一次月考数学试卷黑龙江省哈尔滨师范大学附属中学2019-2020学年高一下学期第二次(线上)考试数学试题