1 . 过点
作圆
的切线,A为切点,
,则
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bec550c01b4f075f22ab67f5e55ed5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80bdb84ef7474ce126dfcc51641815b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754826457671db8939098215943e656a.png)
A.![]() | B.![]() | C.4 | D.3 |
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2 . 当实数
变化时,函数
最大值的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78c79175b07675507fca34fd59fbd24.png)
A.2 | B.4 | C.6 | D.8 |
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解题方法
3 . 对于定义域为
的函数
,若存在区间
,使得
同时满足:
①
在区间
上是单调函数;
②当
的定义域为
时,
的值域也为
,则称区间
为该函数的一个“和谐区间”
已知定义在
上的函数
有“和谐区间”,则正整数k取最小值时,实数m的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235b69c35a633494664799f642cf47bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
已知定义在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/590e9b355752da576aa7f628315e6c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ef658ba0fcda37d15e46fbde0ff0199.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
4 . 已知函数
若对任意的
都有
恒成立,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7662bc56becad32b12e4b2b77973ff82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5fc0c0942928b7c5bcd9ef77bd0b30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-05-07更新
|
638次组卷
|
2卷引用:北京市昌平区2024届高三第二次统一练习数学试题
名校
5 . 已知:对于任意的正数
,
,若满足
,则
恒成立,那么k的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e1a5de2da412f01ec632e82bb3882b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5558c083d34cbb0a58d3ce1dc6f5778e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b04d2baacbf2699d2f8ec003662d1578.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
6 . 已知
是椭圆
上的动点,若动点
到定点
的距离
的最小值为1,则椭圆
的离心率的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/446239fc6902eb55ad0e01d924faf592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d56ab70e602f2e2e291df643ab209162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
7 . 已知函数
在
存在最大值与最小值分别为
和
,则函数
,函数
图像的对称中心是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b395c34d1e131d86508a2b5b614369e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b94ad4660ee76594c0c49a3541bfc72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cffba636156bd15b345d6869b1616e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
8 . 已知函数
,
不存在最小值,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b2d38532b21f22ef5aee6d1e478c41a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024·全国·模拟预测
9 . 已知
,且
在区间
恒成立,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ae572a9d205c09710587c4fb857b8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1074e5765256f1c5224287fe634ca91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
10 . 设函数
,若
恒成立,则实数a的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e315a6683ed4833d621fbe0d190e0df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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