名校
1 . 已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)讨论函数
的单调性;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba17f18c17d3d9f4145022baeb5c72bb.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea9824af71c9da5db5a00ec06063024.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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2 . 在
中,
在边
上,且
平分
,若
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc4d6a2ca3def2f7bbe008daa972336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a7f89fd7ddc3277cf27230a12d60f11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
3 . 如图,在平面斜坐标系
中,
,平面上任一点
的斜坐标定义为:若
(
为与
轴、
轴同方向单位向量),则点
的斜坐标为
.若在该斜坐标系中,
,
,则
为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6091495f40b421fde1b167814e6674d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5253a9a71037d60059b60237824193b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10814bc3db929e79874befe96cf4e3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d9aa1d34d66a6876aa0566c8fc8b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5685e364dec31be0e5d6973e5b56efcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d23dbda2563059789698f0219387900.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f22de2383a103b4481e8b4669caddc4.png)
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4 . 海岸上建有相距
海里的雷达站C,D,某一时刻接到海上B船因动力故障发出的求救信号后,调配附近的A船紧急前往救援,雷达站测得角度数据为
.
(2)求
之间的距离,并判断若A船以30海里每小时的速度前往B处,能否在3小时内赶到救援(说明理由)?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fd1766294dc48dd810a6ab4840703a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914a8b5f26d7ec9a180b1a15f5395a63.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
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5 . 下列命题错误的是( )
A.若向量![]() ![]() ![]() ![]() ![]() ![]() ![]() |
B.在![]() ![]() ![]() ![]() ![]() |
C.已知向量![]() ![]() ![]() ![]() ![]() |
D.平面向量![]() ![]() ![]() ![]() ![]() ![]() |
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解题方法
6 . 已知函数
.
(1)当
时(
为大于0的常数),求
的最大值;
(2)若当
时,不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0adee76b9907e6405940fb26a982aff7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b2d3722725e8293bb801a94e27389d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d6751cbb87b9740963138f9593b48db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c898787dd05d6f1f1d67b7a9b97ede5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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7 . 已知
,记数列
的前
项和为
,则下列说法正确的个数是( )
(1)
(2)
(3)
(4)
的最小值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d52c54a8843e4fede36257201ce3a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b6844f06609f35a69eaaea2ff3c4e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9846d0d214196ec0882b6ddc664492dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760526364f3b888cbdc9193285e3c80e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77549362203ae2133a9f7cd88367b1f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5388aa7fdfc4573c0d99ecc89bc730e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d52c54a8843e4fede36257201ce3a1.png)
A.1个 | B.2个 | C.3个 | D.4个 |
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解题方法
8 . 已知函数
.
(1)当
时,证明:
.
(2)若
在
上恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20a21999ea818acdfb48d3641f70d3b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2cbbf4d5b8ecbfccc5de39781396d07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
您最近一年使用:0次
2024-04-18更新
|
836次组卷
|
3卷引用:吉林省延吉市延边第二中学2023-2024学年高二下学期5月期中考试数学试题
名校
9 . 定义在
上的函数
,已知
是它的导函数,且恒有
成立,则有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01dc2d99655cf7598837cb0886166ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1486e72ffd26e5039a517cc896b9c2b2.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024-04-04更新
|
459次组卷
|
4卷引用:吉林省延吉市延边第二中学2023-2024学年高二下学期5月期中考试数学试题
名校
10 . 已知数列
满足
,
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d8e58e4f24eea858ed404cc5d3e070.png)
A.当![]() ![]() | B.当![]() ![]() |
C.当![]() ![]() | D.当![]() ![]() |
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2024-03-27更新
|
245次组卷
|
2卷引用:吉林省延吉市延边第二中学2023-2024学年高二下学期5月期中考试数学试题