名校
1 . 已知等差数列
的前n项和为
,满足
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64e2f80dfb83790c10fe76655cf0f17.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/dc4736baf488b235b9f26ca6e518bbff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c834d17a85cfad3b12f2869b13aa2cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64e2f80dfb83790c10fe76655cf0f17.png)
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2023-10-17更新
|
1853次组卷
|
7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(已下线)4.2 等差数列(4)(已下线)第03讲 4.2.2等差数列的前 项和公式(1)(已下线)4.2.2 等差数列的前n项和公式(8大题型)精讲-2023-2024学年高二数学题型分类归纳讲与练(人教A版2019选择性必修第二册) (已下线)4.2.2 等差数列的前n项和公式——课堂例题湖南省常德市第一中学2024届高三上学期第四次月考数学试题(已下线)考点3 等差列的前n项和及其性质 2024届高考数学考点总动员
2 . 若a是4+m,4-m的等差中项,则a=
您最近一年使用:0次
3 . 在等差数列
中,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa3f8ff3757dd382060a9d141cd9ded6.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c5d97312b0c5392caf086deab599042.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa3f8ff3757dd382060a9d141cd9ded6.png)
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4 . 已知数列
为等差数列,且
,则
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1058254faf78a383415111725525be7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e9ba779ae126b3cad3185a4c54eedfd.png)
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5 . 若实数
、
、
成等差数列,则直线
必经过一个定点,则该定点坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f6e1f67dc15c3cf135a78af95c70fe.png)
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2023-06-20更新
|
461次组卷
|
4卷引用:上海师范大学附属中学2022-2023学年高二下学期3月第二次月考数学试题
上海师范大学附属中学2022-2023学年高二下学期3月第二次月考数学试题上海市宝山区2022-2023学年高二下学期期末数学试题(已下线)第01讲 直线的方程(九大题型)(讲义)-2上海市上海大学附属中学2023-2024学年高二下学期3月月考数学试卷
6 . 设
为等差数列
的前
项和,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](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/a9875b5a21e007035dbf079af4617d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a4363b3413803d6fcdfb659af41c390.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
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名校
7 . 已知等比数列
的公比为2,前
项和为
,且6,
,
成等差数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/614306cc3f34bdee4d5d885b79667645.png)
______ .
![](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/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/614306cc3f34bdee4d5d885b79667645.png)
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2023-06-02更新
|
648次组卷
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5卷引用:陕西省西安市铁一中学2022-2023学年高二下学期期末理科数学试题
8 . 在正项等比数列
中,若
是
与
的等差中项,则数列
的公比![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59270a26ebfc8efaf2b7ddaa811b306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7424d969bcb8eb604d42426448e7b7c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
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22-23高二下·全国·课后作业
解题方法
9 . 已知数列
满足
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0382b4a2ab0657d2d6830bb6be2b17b6.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c0886362228655cb93f421d6abf4cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f058265d2335368907242d3d5ac4134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0382b4a2ab0657d2d6830bb6be2b17b6.png)
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名校
10 . 已知一个随机变量
的分布列为
,若
是
,
的等差中项,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655d5b48deb3a6f2abf74d3966e74a30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
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