解题方法
1 . 在等差数列
中,
,
,则数列
的公差d( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259b2e755105c0ee479eabf7265a76a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa89e137a7d3e7e54acbec908da5f989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
2 . 在等差数列
中,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28fb3634ef6515ebb1db5df9208a9f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6832051de5898c8540b448f73eb3795c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
A.4 | B.5 | C.6 | D.8 |
您最近一年使用:0次
名校
解题方法
3 . 已知等差数列
的前
项和为
,
,
,则
的值为( )
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afbfd6b761451716ba3d7130c93497ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3cf6f2bbe20a404fea41a4d2b1c4c7.png)
A.70 | B.80 | C.90 | D.100 |
您最近一年使用:0次
2024高二·全国·专题练习
4 . 在等差数列
中,已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37393a73bc9c1006711e3ef5b853453a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9bbe98100c8067ff36ac536d043a85.png)
A.![]() | B.0 | C.1 | D.2 |
您最近一年使用:0次
解题方法
5 . 已知
五个数成等差数列,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9647981299ab9d112aa474989066722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a78eedb9db369c65f61be028a12ee5fe.png)
A.15 | B.20 | C.30 | D.35 |
您最近一年使用:0次
解题方法
6 . 已知等差数列
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/dfbd106e520ebeaaa31b4c461535f233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3155398e77dcfb5fc463d589fef478c.png)
A.9 | B.10 | C.11 | D.12 |
您最近一年使用:0次
2024-05-12更新
|
1495次组卷
|
2卷引用:广东省广州市番禺区2023-2024学年高二下学期期中数学试卷
名校
解题方法
7 . 在1和31之间插入14个数,使它们与1,31组成公差大于零的等差数列,则该数列的公差为( )
A.![]() | B.30 | C.-2 | D.2 |
您最近一年使用:0次
8 . 等差数列
中,
,则
的公差
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfdaea1fecbbb3b35f120f621a14e609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c98c59cd4749afdd21e73529fc84323.png)
A.3 | B.2 | C.![]() | D.![]() |
您最近一年使用:0次
9 . 在等差数列
中,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b7d1b0e84b27de77f11bdb3096ea9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa37e5661af68b263a3ed9030d4e9003.png)
A.14 | B.15 | C.16 | D.18 |
您最近一年使用:0次
2024-04-26更新
|
952次组卷
|
2卷引用:四川省成都市金牛区实外高级中学2023-2024学年高二下学期第一阶段考试数学试题
10 . 设等差数列
的前
项和为
若
,
,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/1bf4000fec5bf94d56935108d72af3c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e2aca943dc3ed94ab930c1cf52c7352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84f9997226581fcb41b2fe15bafb928a.png)
A.99 | B.101 | C.2500 | D.![]() |
您最近一年使用:0次