名校
1 . 已知数列
与
均为等差数列,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/9396f1c232dbd0eb7ab7bfd039fcd727.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212a0a4bbc1918258960ca8e479e838d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/160c96c877624600f6b724b567a6570b.png)
A.5 | B.6 | C.7 | D.8 |
您最近一年使用:0次
2022-11-10更新
|
1842次组卷
|
7卷引用:浙江省宁波市2023届高三上学期一模数学试题
解题方法
2 . 已知
,则“
”是“数列
为递增数列”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930bc56406e69b785b37a83d48e36724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b03536dc607a70a2cc597e739cb345f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4812e51a66b65d508f57faf5e4341a52.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
名校
3 . 已知数列{
}满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59e7c7a84a4bdb959e95536d0404ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/507b0c275676c68dde8a81e5282f5773.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a431c9c99c80d61b3c6457efad0b50.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-08-05更新
|
1495次组卷
|
6卷引用:浙江省2022届高三下学期6月高考数学仿真模拟卷02
浙江省2022届高三下学期6月高考数学仿真模拟卷02湖南省长沙市雅礼中学等十六校2022届高三下学期第二次联考数学试题(已下线)第01讲 数列的概念与简单表示法(练)(已下线)第36练 数列的概念安徽省滁州市定远县第三中学2022-2023学年高三上学期9月月考数学试题(已下线)专题04 数列(5)
解题方法
4 . 已知数列
的各项都是正数,
.记
,数列
的前n项和为
,给出下列四个命题:
①若数列
各项单调递增,则首项![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b6afd89d092cc41387fef6e6da4283.png)
②若数列
各项单调递减,则首项![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165734f56d97b5b4a8ac80b848756a75.png)
③若数列
各项单调递增,当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b0fc7db3999d4f4b4e5c472f1758b12.png)
④若数列
各项单调递增,当
时,
,
则以下说法正确的个数( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee5bec0675734fa65c305a8ef5d8666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e542f906f67f78fb7e682990c9b206ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
①若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b6afd89d092cc41387fef6e6da4283.png)
②若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165734f56d97b5b4a8ac80b848756a75.png)
③若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f4e1236d7dc0366d9523d0cbb426be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b0fc7db3999d4f4b4e5c472f1758b12.png)
④若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/352d9b76dcf639368fa68cae70149802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93752c32b0fd17fc7b3737f35e70a0e4.png)
则以下说法正确的个数( )
A.4 | B.3 | C.2 | D.1 |
您最近一年使用:0次
解题方法
5 . 已知
是直角三角形,
是直角,内角
所对的边分别为
,面积为
.若
,则下列选项错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b676e8ce8c01aebba675270fb6b453b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7e0cabca48a12ffefd4f8ef4621ba9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/594af9fdf0ec161fafdc4214eca9b1c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee608c9a45fdce710c20883e57f79b4b.png)
A.![]() | B.![]() |
C.数列![]() | D.数列![]() |
您最近一年使用:0次
名校
解题方法
6 . 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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4582694a75950560f54edb6cbe099e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
A.10 | B.11 | C.12 | D.13 |
您最近一年使用:0次
2022-06-04更新
|
526次组卷
|
2卷引用:浙江省杭州师范大学附属中学2022届高三下学期5月仿真模拟数学试题
名校
7 . 设等差数列
的前n项和为
,首项
,公差
,若对任意的
,总存在
,使
.则
的最小值为( )
![](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/390636a89883bd64bf8da9bf8654aff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d8bbb4a09e0ac86bbae46222a90841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b6d151d3f864bae873987f6db9327a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7a5f7d0ff1cfd221bba6c549bb46fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b03cab802bcf9124ffddff198d4c64d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
8 . 记
.对数列
和U的子集T,若
,定义
;若
,定义
.则以下结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58af010d43177d3ff9c9f21acd97abbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f843514cb88b425093e25e2e63148987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2107216f6f7f012fd631c5da84365b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efbbcfe1c221cbfee862634526d6c1f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e745fd938663191ae254f18b979afc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c17e4e98aa1080cf1752257a113af45.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
2022-05-29更新
|
545次组卷
|
3卷引用:浙江省北斗星盟2022届高三下学期5月联考数学试题
浙江省北斗星盟2022届高三下学期5月联考数学试题浙江省2022届高三下学期高考模拟预测数学试题(已下线)4.3.2.2 等比数列的前n项和的性质及应用(练习)-2022-2023学年高二数学同步精品课堂(人教A版2019选择性必修第二册)
9 . 已知
依次组成严格递增的等差数列,则下列结论错误 的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a685877921eedbbd24cedba22632fec7.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
10 . 已知数列
满足
,其前
项和为
,且
,则数列
的前
项和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.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/1f204870d9275928227e4aa271e22524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a62736f64f343f27e63ab31c19416698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f49dac16bbcffa236fbee961ada16420.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-05-29更新
|
372次组卷
|
2卷引用:浙江省宁波市效实中学2022届高三下学期5月模拟数学试题