名校
1 . (1)对于任意
,不等式
恒成立,求实数
的取值范围;
(2)若存在实数
,使不等式
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f8c2865470a1f08e04ad421203d8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c771d4639f541afdaff95adac31f9e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
2 . 命题“
”为假命题,则实数
的范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a911a016772dfe81369f8fbeadaf6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
3 . 设命题
,写出一个实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
______ ,使得
是真命题.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97806721192c533443687be1bdea81a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
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2023-10-12更新
|
65次组卷
|
2卷引用:江苏省徐州市邳州市2023-2024学年高一上学期10月阶段性质量检测数学试题
名校
4 . 下列结论正确的有( )
①
是
的充要条件
②
的最小值为2
③命题“
,
”的否定是“
,
”
④关于x的不等式
有解,实数a的范围是
或
.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d5f0d374837655cc286d326305da36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e25e52343ede4373bc599876cce2fb.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827b1f9ae828142a4243382fb6ce91e9.png)
③命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f09d569d58fdd87f43043613ab0067f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87249dcd658c64cfa152b4c164b27e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fad1dd76d5b72f10f5bb62693a2996f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e4848e12d90125411fb07a7e524de6.png)
④关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61901f0c23f1994acb34bd8c0c793e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301605e86e5a5e61a65c91cd3dd8b77e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
A.①②③④ | B.①③④ | C.②③④ | D.③④ |
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解题方法
5 . 关于x的不等式
的解集为非空集合的一个必要不充分条件是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75948e83836081eb754b71819d78230d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
6 . 若存在
,有
成立,则实数a的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7dbb416ec1ff1984a724a4f48bf692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8019950dcfb99d191349508c0336a461.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
7 . 已知命题
:
,
若
为假命题,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5faa91783a0bbad191885fb89407f987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d1126b0bf0713b5e96819426d10a3ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
8 . 已知命题
“
”是“
”的充分不必要条件.
(1)若命题
为真命题,求实数
的取值范围;
(2)已知命题
,
,若命题
和命题
恰有一个为真命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca13af22165d77633b620d4f2b9e598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f0f47f0085389c87ac32295b148d28.png)
(1)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa0583842bff0b9ac0a539656f88099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b7c6cadf0961ed2a40aa2fcbf074b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
9 . 在①
,②
这两个条件中任选一个,补充到下面问题中的横线上,并求解问题.已知函数
.
(1)若命题:“______,
”为真命题,求实数
的取值范围;
(2)求关于
的不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155393694bba51b73ec8a49fe4bcc490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/586adf36a77e81855be320fb3f19b611.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50546d53be73f37396b27987afb7181b.png)
(1)若命题:“______,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc65d6eb9b63f96d80b54ec9893aee8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d1309f7b38293da6cbd46d5ff0f3f9.png)
您最近一年使用:0次
2023-10-11更新
|
94次组卷
|
3卷引用:福建省福州市超德中学2023-2024学年高一上学期9月月考数学试题
10 . 已知关于的不等式
.
(1)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
(2)若不等式对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539ed85a90ec295155431c5c5b2b0efb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)若不等式对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5d54ea50d01535318b10a9fa570931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次