解题方法
1 . 函数
定义域为_______ .
![](https://img.xkw.com/dksih/QBM/2016/9/20/1573031777263616/1573031783276544/STEM/d89814ba298d459d96e21530b283f8fa.png?resizew=252)
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2 . 设集合
,集合
,则集合
等于
![](https://img.xkw.com/dksih/QBM/2015/3/17/1572008595439616/1572008600944640/STEM/a327f74f4db44762854a7f5fef3f75ac.png)
![](https://img.xkw.com/dksih/QBM/2015/3/17/1572008595439616/1572008600944640/STEM/0367d955acb047549d8578eaf2f40ef1.png)
![](https://img.xkw.com/dksih/QBM/2015/3/17/1572008595439616/1572008600944640/STEM/5676629b2ad543c1857d6bf535f96ad4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 已知命题
:
;
:
.
(1)若“
”为真命题,求实数
的取值范围;
(2)若“
”为真命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d1f261192a864c9fdde57dfe8386c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3492f5d720cb38a262bab89391b3b5e3.png)
(1)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2017-02-28更新
|
255次组卷
|
2卷引用:内蒙古乌兰察布市2021-2022学年高二上学期期末考试数学(理)试题
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4 . 设函数
,则不等式
的解集是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65f01841a68cb8741bbb49ea47cf39ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7da221f28de0d5aa1b62e0d41cab7d9.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
5 . 已知函数
.
(1)若
,求不等式
的解集;
(2)若
,
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eab3f5d6aa528be872297e170d8398c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb1bbd495bb6477a9115925a994996f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f8693ba02ea9b5dd2612ffc5307682b.png)
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6 . 已知关于x的方程
在
上有两个不同的实数解,则实数a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c3e0a59e86ee07ab0ffaad6687ac6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01b6fb6a1c7a895df528382a5583444.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 下列结论中,错误的是( )
A.![]() ![]() |
B.已知命题![]() ![]() ![]() ![]() ![]() ![]() |
C.![]() ![]() |
D.命题:![]() ![]() ![]() ![]() |
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