1 . 已知
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d5879bac703a57a7d2d08ac28b2a312.png)
A.若![]() ![]() |
B.![]() |
C.![]() ![]() |
D.设![]() ![]() |
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2022-06-05更新
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2卷引用:广东省茂名市信宜市2022-2023学年高二下学期期中考试数学试题
名校
2 . 已知函数
,其中
.
(1)讨论函数
的单调性;
(2)当
时,若关于
的不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462a392515ddeb7198e0c4a7ae99b1c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f5f7a36e251bbc424ccc127ebb2881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2843c5568022bd4cd273c51e0a35184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2022-05-31更新
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6卷引用:广东省高州市学校2023-2024学年高二下学期5月质量监测数学试题
3 . 已知
.
(1)当
时,讨论
的单调性;
(2)若对任意
,
≥0恒成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f9278205219a928d481f3f2ad41622.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950581caec90a28b5fa8f1e81bf21d19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27cca195bcc622c197593541b200409c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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2022-02-17更新
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2卷引用:广东省茂名市五校联盟2021-2022学年高二(创新班)上学期期末联考数学试题
4 . 如果两地的距离是600公里,驾车走完这600公里耗时6小时,那么在某一时刻,车速必定会达到平均速度100公里/小时.上述问题转换成数学语言:
是距离关于时间的函数,那么一定存在:
,
就是
时刻的瞬时速度.前提条件是函数
在
上连续,
在
内可导,且
.也就是在曲线的两点间作一条割线,割线的斜率就是
,
是与割线平行的一条切线,与曲线相切于
点.已知对任意实数
,且
,不等式
恒成立,若函数
,则实数
的可能取值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72bbff2e8ee011e12730194cc4eb6bc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d150c59959074465bcba09edd06d522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1dcee29fdf5ec1ebd5f00c494c3fcb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b518b62a7f1ed99c4dd482ceba2ae5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d150c59959074465bcba09edd06d522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c7705841e16ef353eae8a3aea643c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2210f152080d9a68a97c805f5c1cde96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c898787dd05d6f1f1d67b7a9b97ede5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/610ab2d7cacfbe38d63a4e34d346193b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.7 | B.8 | C.9 | D.10 |
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2021-10-14更新
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3卷引用:广东省茂名市电白区水东中学2021-2022学年高二下学期3月测试数学试题
5 . 设函数
.
(Ⅰ)若函数
在其定义域上为增函数,求实数
的取值范围;
(Ⅱ)当
时,设函数
,若在
上存在
使
成立,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/8/10/1572971461476352/1572971467702272/STEM/9efcac724b03435d916e1749dfdfde2f.png)
(Ⅰ)若函数
![](https://img.xkw.com/dksih/QBM/2016/8/10/1572971461476352/1572971467702272/STEM/fa408c0bbe994400b33f50e188ffcee1.png)
![](https://img.xkw.com/dksih/QBM/2016/8/10/1572971461476352/1572971467702272/STEM/1df579bfc19c4845a07d3a2301590866.png)
(Ⅱ)当
![](https://img.xkw.com/dksih/QBM/2016/8/10/1572971461476352/1572971467702272/STEM/fa78b02eb52248dc8f9beae13e82607e.png)
![](https://img.xkw.com/dksih/QBM/2016/8/10/1572971461476352/1572971467702272/STEM/4f05e8b88bfd4dc3acf4b418ce1d6431.png)
![](https://img.xkw.com/dksih/QBM/2016/8/10/1572971461476352/1572971467702272/STEM/4ed54cfcc86645f2ab50777c3c9f507f.png)
![](https://img.xkw.com/dksih/QBM/2016/8/10/1572971461476352/1572971467702272/STEM/9bf5863f391549ed8d68b26e0bb7e30c.png)
![](https://img.xkw.com/dksih/QBM/2016/8/10/1572971461476352/1572971467702272/STEM/8216682e6b6844cfa43e6d7597548f9e.png)
![](https://img.xkw.com/dksih/QBM/2016/8/10/1572971461476352/1572971467702272/STEM/1df579bfc19c4845a07d3a2301590866.png)
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6 . 已知曲线
上的点到点
的距离比它到直线
的距离小2.
(1)求曲线
的方程;
(2)曲线
在点
处的切线
与
轴交于点
.直线
分别与直线
及
轴交于点
,以
为直径作圆
,过点
作圆
的切线,切点为
,试探究:当点
在曲线
上运动(点
与原点不重合)时,线段
的长度是否发生变化?证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6b27da5da992993b9bfe948efc604b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5421a28dc3675ae20190d6090793246e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3157d944f757c182d76bcd6f8eac076.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6b27da5da992993b9bfe948efc604b.png)
(2)曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6b27da5da992993b9bfe948efc604b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9355031ea0b2dc9cef3777621bc6d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6b27da5da992993b9bfe948efc604b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2016-12-03更新
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4卷引用:广东省茂名地区2019-2020学年高二上学期期末数学试题
广东省茂名地区2019-2020学年高二上学期期末数学试题2014年全国普通高等学校招生统一考试文科数学(福建卷)(已下线)专题26 求动点轨迹方程 微点2 定义法求动点的轨迹方程(已下线)专题24 解析几何解答题(文科)-2