名校
1 . 已知
为等差数列
的前n项和,
,则
( )
![](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/12a59b6d44509728b04821c38e4f0771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9334dc3344670bf8962c98f7893a969e.png)
A.4 | B.6 | C.8 | D.10 |
您最近一年使用:0次
2 . 已知等差数列
的前n项和为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d0dc3181f37d7da2b3809da52f4769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36243198e5e20c56399e4ad5ac3c519.png)
A.9 | B.12 | C.18 | D.24 |
您最近一年使用:0次
3 . 已知函数
的两个零点分别为
,
,若
,
,
三个数适当调整顺序后可为等差数列,也可为等比数列,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55dfc9013281f287efec4834f867bcb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5a94417d0d62715ea4067280d733df.png)
A.1 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
4 . 已知在各项均为正数的等差数列中,有连续四项依次为m,a,4m,b,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2122e3f1e76a635e58e4d54aa594c552.png)
A.![]() | B.![]() | C.![]() | D.4 |
您最近一年使用:0次
2024-05-08更新
|
913次组卷
|
3卷引用:湖南省长沙市第一中学2024届高三下学期月考(八)数学试题
名校
解题方法
5 . 已知各项均为正数的递增数列
的前
项和为
满足
,
,若
成等差数列,则
的最小值为( )
![](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/f9295f2addeeddbc3250bf55b7d215cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67ff6dcb5d05e2aac525e523886a803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/205c8e59c272853bb9862d6c188e293b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b759fe25314c5739617adcb3b80f5700.png)
A.11 | B.13 | C.![]() | D.10 |
您最近一年使用:0次
名校
6 . 已知
是公比不为1的等比数列
的前
项和,则“
成等差数列”是“存在不相等的正整数
,使得
成等差数列”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089f16d8941a9a57c89a25d1f5fc1017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ae138b4f85019d3faa39b271342adb.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
2024-03-19更新
|
1358次组卷
|
3卷引用:浙江省宁波市“十校”2024届高三3月份适应性考试数学试题
7 . 对于命题:①存在
、
、
的某个排列,使得对任意
,这三个数均不能成等比数列;②对
、
、
的任意排列,均存在相应的
,使得这三个数成等差数列.下列判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7980e96d332aa0b4ed25c2dbff79b366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45b8b77522dfc890b99f0a86a690de94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc24d605ad707ad0e76059d8a31f50d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5caabda288fc01cc168938846eec5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7980e96d332aa0b4ed25c2dbff79b366.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45b8b77522dfc890b99f0a86a690de94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc24d605ad707ad0e76059d8a31f50d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5caabda288fc01cc168938846eec5d2.png)
A.①和②均为真命题 | B.①和②均为假命题 |
C.①为真命题,②为假命题 | D.①为假命题,②为真命题 |
您最近一年使用:0次
名校
解题方法
8 . 已知正项等比数列
中,
成等差数列.若数列
中存在两项
,使得
为它们的等比中项,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a69bebfcae78b52d51c1edfbbbfa712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2320fcc6aaa1d36b49f8e03b376b80e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d3b31aa38ae4c0da2b7e792081c5f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd93ee03569849295ebde055410d1b84.png)
A.3 | B.4 | C.6 | D.9 |
您最近一年使用:0次
2024-03-04更新
|
2862次组卷
|
11卷引用:湖北省荆州市沙市中学2024届高三下学期3月月考数学试题
湖北省荆州市沙市中学2024届高三下学期3月月考数学试题山西省太原市师苑中学校2023-2024学年高三下学期第二次月考数学试题云南省德宏傣族景颇族自治州2024届高三上学期期末教学质量监测数学试题2024年普通高等学校招生全国统一考试数学模拟试题(一)(新高考九省联考题型)(已下线)考点7 基本不等式及其应用 --2024届高考数学考点总动员【讲】(已下线)第2讲:不等式的解法与性质、基本不等式【练】云南省大理州祥云县部分高中(云·上联盟五校协作体)2024届高三下学期复习摸底诊断联合测评数学试题广东省汕头市潮阳实验学校2023-2024学年高二下学期第一次月考数学试题江西省丰城市第九中学2023-2024学年高二下学期4月月考数学试题四川省成都市简阳实验学校2023-2024学年高二下学期3月月考数学试题(已下线)1.3.1 等比数列7种常见考法归类(3)
名校
9 . 已知递增的等比数列
,
,公比为q,且
,
,
成等差数列,则q的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/390636a89883bd64bf8da9bf8654aff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
10 . 在
中,角
的对边分别为
成等差数列,当
的外接圆半径
时,
周长的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1920a04d236d36c512c7624ddfdf846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e159fa38488741d395ea9cb03386b1ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-02-01更新
|
512次组卷
|
3卷引用:云南省三校2024届高三高考备考实用性联考卷(五)数学试题