名校
1 . 已知不等式
的解集为
,若
中只有唯一整数,则称A为“和谐解集”,若关于
的不等式
在区间
上存在“和谐解集”,则实数
的可能取值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8870876779e79db7033f2617b8535eb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083479b94380e8d659eff92d10a1989d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
2 . 已知向量
,设函数
.
(1)求
的表达式并完成下面的表格和画出
在
范围内的大致图象;
![](https://img.xkw.com/dksih/QBM/2016/10/28/1573099218722816/1573099225194496/STEM/a019359f47b1493889d2b8e83e661383.png)
(2)若方程
在
上有两个根
、
,求
的取值范围及
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e946314bbe82b72f800d380af5f05a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b11eeda104db8bca949d535f0674d98.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fae755f5f05442ddbe797d1ae565c29.png)
0 | ![]() | ![]() | ![]() | |||
![]() | 0 | ![]() | ||||
![]() |
![](https://img.xkw.com/dksih/QBM/2016/10/28/1573099218722816/1573099225194496/STEM/a019359f47b1493889d2b8e83e661383.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee2125e761b2ef9da51dc0f9a02dee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fae755f5f05442ddbe797d1ae565c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c62c14a017007a6bdfe25eada9c433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e197143a3210c70f87d5147128e80de.png)
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名校
3 . 设函数
,
①若
,则不等式
的解集为___________ ;
②若
,且不等式
的解集中恰有一个正整数,则
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711a65c36cdd87a7cdf26f9b84e5c49b.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3b43fb07a1d631b294dbf6f0f58713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acda6b6464db27e1ec18a1522406d2.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a023ef8a7a5d94029b08b4cb30422e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acda6b6464db27e1ec18a1522406d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
4 . 已知函数
的定义域为
,且满足
,当
时,有
,且
.
(1)求不等式
的解集;
(2)对任意
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6521ef75f0a05fe62cdfd2fbbe0430b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/737c165baced95d7095d9f918a9cc110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b4ed4485745f1d259a3953c242b9cf2.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f48fd639616cdb1f927d3641297361.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450fe3dfd82db4e756924653b0047aec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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|
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