名校
解题方法
1 . 已知等比数列
的前
项和
,且
成等差数列.
(1)求
的通项公式;
(2)设
是首项为
,公差为
的等差数列,其前
项和为
,求满足
的最大正整数
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb848ca7a04fe4cd974a5898f833e57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d731b821d2247a1c60a1b19c5312bde.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc79ce6a387dfe20817e5658b0b5af0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b8c7da0760a721aa744447ccbdeb38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2023-05-19更新
|
327次组卷
|
2卷引用:北京市北京师范大学第二附属中学2022-2023学年高二下学期期中考试数学试题
名校
解题方法
2 . 若等差数列
和
的前n项的和分别是
和
.且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f9cc3cae2dccfc3a4dc386806da62b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4863086901be9beea78c25d48ceb460.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
3 . 已知等比数列
的公比
不为
,且
成等差数列,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab4ca0ed05d20ba97aba58d8a5cc043.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2007e991d3adbe585e558873e46164c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
A.1 | B.-1 | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-11更新
|
238次组卷
|
2卷引用:安徽省安庆市宿松中学2022-2023学年高二下学期期中联考数学试题(A卷)
名校
4 . 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)
您最近一年使用:0次
名校
解题方法
5 . 已知数列
满足
,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2956b1eacaabaf91dfe664c4ea7940.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5562171cdbc0ac18cb95e1c94fa07c0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb2dd78aa7ac3df9b83c075bb13f415d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/464d5fe51a7dc6bef2b4b4ff5341dc79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2956b1eacaabaf91dfe664c4ea7940.png)
您最近一年使用:0次
名校
6 . 已知数列
为等比数列,若
,且
与
的等差中项为
,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec66faf5ace112f012aa331efa5c82f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39835887158fcba559fdfe35ebb5c63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59ab85c075a09d55d69e159e4abb268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35efd7684afa9ab0bddd26b586af73d0.png)
您最近一年使用:0次
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7 . 在等差数列
中,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0801aadeecadea68d992195fa1b6420b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2d6508daa99066ee82622b7a44cca13.png)
A.50 | B.100 | C.150 | D.200 |
您最近一年使用:0次
名校
8 . 已知等差数列
的公差为d,随机变量
满足
,
,则d的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce31f84a0f2e6a750e4ef90fe11bae8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79059a3366ed1b339ba1317ce8a1e7f9.png)
您最近一年使用:0次
名校
9 . 设
为正项等差数列
的前
项和.若
,则
的最小值为( )
![](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/8dd6ed297120e5125ca2c9f3a444bb38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a7486636b613960ea474c201854ce5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-09更新
|
2575次组卷
|
9卷引用:高二下学期期末押题卷02-【同步题型讲义】2022-2023学年高二数学同步教学题型讲义(人教A版2019选择性必修)
(已下线)高二下学期期末押题卷02-【同步题型讲义】2022-2023学年高二数学同步教学题型讲义(人教A版2019选择性必修)福建省福州第八中学2022-2023学年高二下学期期末考试数学试题四川省成都市2023届高三三诊理科数学试题(已下线)第五节 基本不等式B 素养提升卷广东省华南师范大学附属中学2023届高三三模数学试题江苏省扬州中学2023届高三下学期高考前保温练数学试题广东省东莞市两校2023届高三联合模拟预测数学试题广东省四校2024届高三上学期10月联考(二)数学试题(已下线)第04讲 基本不等式及其应用(练习)
名校
10 . 已知等差数列
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e84b1624c2c22f591a4156ac83575318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6225dab6cc57a6fccc1fa30572136013.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-06更新
|
1198次组卷
|
8卷引用:黑龙江省哈尔滨市第四中学校2022-2023学年高二下学期期中数学试题
黑龙江省哈尔滨市第四中学校2022-2023学年高二下学期期中数学试题(已下线)4.2.1 等差数列的概念(8大题型)精练-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)安徽省蚌埠市2023届高三四模数学试题广东省深圳市福田区红岭中学2024届高三上学期第二次统考数学试题(已下线)第02讲 等差数列及其前n项和(十大题型)(讲义)-1(已下线)4.2 等差数列(1)(已下线)第02讲 4.2.1等差数列的概念(1)(已下线)专题6.1 等差数列及其前n项和【九大题型】