1 . 已知函数
,则“
有极值”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8928d967ae0e2912df78b91782126f21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d217c7b12e12e5fb67472452518859ec.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
7日内更新
|
495次组卷
|
7卷引用:江西省部分学校2023-2024学年高二下学期第二次月考(5月联考)数学试题
名校
2 . 已知向量
.记函数
.
(1)求函数
的单调增区间;
(2)对任意
,都有
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2683c6c9ba6f43f0b3eee5352e05096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2abef10038f4b19f340c66aa3e9364aa.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d3085ab666e12fcf097e319bc12a6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619af6f9d1916822d51024bd77a8641e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
名校
3 . 著名的费马问题是法国数学家皮埃尔.德费马(1601—1665)于1643年提出的平面几何最值问题:“已知一个三角形,求作一点,使其与此三角形的三个顶点的距离之和最小.”费马问题中的所求点称为费马点,已知对于每个给定的三角形,都存在唯一的费马点,当
的三个内角均小于
时,则使得
的点
即为费马点.当
有一个内角大于或等于
时,最大内角的顶点为费马点.试根据以上知识解决下面问题:
(1)若
,求
的最小值;
(2)在
中,角
所对应的边分别为
,点
为
的费马点.
①若
,且
,求
的值;
②若
,求实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231b861d6d1f1d0b9f52b041cb40eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39fd1066cf8552f50c52beed433f69c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231b861d6d1f1d0b9f52b041cb40eb62.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b54286fe72b8305272c36c0a3a8d2bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0b4831a51839ce9c85429ece0f05ba7.png)
(2)在
![](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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682bfabebd7d02eca440089344246da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08ce80e91fdf435a8e3ec05be990e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b8f8a1e38db0e55b9b1934569b24e74.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b5698a33ca72f0bb26c42c49bb8d8de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
4 . 已知全集
,集合
,
,那么集合
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa26ede4564b80c035c146272384bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58f19e6bea9f955f655a803c9b417ca3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32247ede98f9ea1e873ac3e6c8bb3208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4437ed14585a5b64036e9d4289d58b4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
5 . 已知集合
,则
的子集个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d744214aad8cb371df0286db1c0255f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
A.4 | B.7 | C.8 | D.16 |
您最近一年使用:0次
2024-06-12更新
|
751次组卷
|
3卷引用:江西省南昌市第十中学2023-2024学年高二下学期第二次月考数学试题
名校
6 . 已知某函数的部分图象如图所示,则下列函数中符合此图象的为( )
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-06-11更新
|
1400次组卷
|
3卷引用:江西省南昌市第十中学2023-2024学年高二下学期第二次月考数学试题
名校
7 . 已知函数
,
,若函数
与
的图象在
上恰有2个交点
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed3aec19f4ad1dac8a1710b888d2dd17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391e64453fa47903c5b71260069670bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ad9a4881ebe1a4a566d0fab96d71baa.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
8 . 已知向量
,若函数
.
(1)求函数
的最小正周期;
(2)若
,求
的最值及取得最值时的
值;
(3)若函数
在
内有且只有一个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0b7df22c38eb1efabf5439faab7fb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a636abb4a7d756eb1c3e120df822830b.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa0b13116954f6338e1b3048d37a70d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25079f12119793682bee7dcd103d12e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e32a34b3381654b4e3a7e0324b896b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2024-05-11更新
|
573次组卷
|
4卷引用:江西省南昌市外国语学校2023-2024学年度高一下学期5月份月考数学试卷
名校
9 . 定义函数
的“源向量”为
,非零向量
的“伴随函数”为
,其中
为坐标原点.
的“伴随函数”为
,求
在
的值域;
(2)若函数
的“源向量”为
,且以
为圆心,
为半径的圆内切于正
(顶点
恰好在
轴的正半轴上),求证:
为定值;
(3)在
中,角
的对边分别为
,若函数
的“源向量”为
,且已知
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9153386601e89709ded16e6e56cc86b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e80896903107cb0ec517fedffa3f735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e80896903107cb0ec517fedffa3f735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eeb34e5f4dbd027466a86df156fa7c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead0f45df9fc9e5a6a90a048daf15ce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b0339e96e32d6fa1a092824850ef8d.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8203f4be92108de03882c38c0e5426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e723e57753f0a4fe1ef8ca1aee0e2117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40589f60d5b9e76464c084d80fe92c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeca565ad5dfdba18cf431dd3b84c57e.png)
(3)在
![](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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c49ca8562b98657ca9c499093f7233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896785f1902334350af510775d152f98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d76137ec77bd3221aa3842cabebe4910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3941f79eb3ae64e0f735ae45308e5b19.png)
您最近一年使用:0次
2024-05-11更新
|
291次组卷
|
2卷引用:江西省宜春市宜丰中学2023-2024学年高一下学期6月月考数学试题
名校
10 . 函数的定义域为
( )
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-05-04更新
|
351次组卷
|
2卷引用:江西省宜春市宜丰中学2023-2024学年高一下学期6月月考数学试题