名校
解题方法
1 . 已知等差数列
的前n项和为
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
__________ .
![](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/2693734765399876e9e93cdb110231c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/185eb7967e13ada069ff64a009b07503.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
您最近一年使用:0次
解题方法
2 . 某网店统计了
商品最近40天的日销售量,日销售量依次构成数列
,已知
,且
,则
商品这40天的总销量为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b71ef6cb9c5d494692d40a9ef279f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd84169c70e9e4d832ff24b62a3b1964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次
2024-03-31更新
|
277次组卷
|
2卷引用:陕西省西安市长安区2024届高三下学期第一模拟考试理科数学试卷
3 . 已知数列
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a061a75239e9b426f22c98a77d86f54e.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec23966eecb1776439b37ff7c6edc667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a061a75239e9b426f22c98a77d86f54e.png)
您最近一年使用:0次
名校
解题方法
4 . 数列
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0acca5aa6b2285d897a65c289c1b54ba.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cff6a476739c29a9c891ecf8d519f2b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0acca5aa6b2285d897a65c289c1b54ba.png)
您最近一年使用:0次
2021-10-21更新
|
1122次组卷
|
7卷引用:陕西省西安市碑林区西北工业大学附属中学2023-2024学年高二下学期3月月考数学试题
5 . 设数列
满足
,
,且
,若
表示不超过
的最大整数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5e82415ef0005454b1ec54c9e743dc.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7def23f30138e0b7c4c1e498d6903a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50feb194b3a7cd2e437e15e0f6e2c3b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab85825d4a002600ca41bd3cd2ee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5e82415ef0005454b1ec54c9e743dc.png)
您最近一年使用:0次
2018-02-11更新
|
471次组卷
|
3卷引用:陕西省西安市第三中学2023-2024学年高二上学期期末数学试卷