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 |
您最近一年使用:0次
解题方法
2 . 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.![]() |
您最近一年使用:0次
名校
3 . 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.![]() |
您最近一年使用:0次
名校
解题方法
4 . 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.![]() |
您最近一年使用:0次
解题方法
5 . 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.![]() |
您最近一年使用:0次
2024高三下·全国·专题练习
6 . 已知函数
,若
恒成立,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec31680bd0ab8f6bfc5a98f2940cc5be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9036f732c3375d29c2c8aa072d5641.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
7 . 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.![]() |
您最近一年使用:0次
名校
8 . 设函数
,命题“
,
”是假命题,则实数a的取值范围是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/166a57417b72edf2b388fd655f986245.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e93c3ad7ef8376b523124af1c791e921.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27d549e83371764b117ba2d159109210.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024高三·全国·专题练习
9 . 记
在区间
(
为正数)上的最大值为
,若
,则实数
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27da7dd1e14169fe42a5740c438009b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf8682c07954e4ba88e5766b1e005f03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef8dbba0c4c15550870d3eb5d3a83e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33dfb09e0377edaad7d16b13330ebcaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
A.2 | B.1 | C.![]() | D.![]() |
您最近一年使用:0次
2024·全国·模拟预测
解题方法
10 . 已知
,
且
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5558c083d34cbb0a58d3ce1dc6f5778e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267f8df2332cab9a8deeae4c1d1c03c2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次