名校
解题方法
1 . 已知命题
时,
恒成立:命题q:关于x的方程
无实根.若命题
是真命题,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ec2fb26a73951e21530e1c5e7ac823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc857618298bad8d496c9cbff534827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3281f1f2727b0c180284a40d2d3836d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
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名校
2 . 已知
,
,
,
,若
为真,则实数a的取值范围是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/248d3fb187b56abeb0317dee8ae6a010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62406b5bf4df4e1756aa1ed5a6ccf372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5c81af39817c57583a0d1c1bebd36e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b21783ab8b24acd697745a39063771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-03-27更新
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282次组卷
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3卷引用:河南省许平汝2021-2022学年高二下学期开学考试理科数学试题
名校
3 . 已知
,命题p:
,
;命题q:
,
,且
为真命题,则a的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2cd15d9a85f61cf07ac4a441adbb372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2e16fdad4507186dd6c52abb25a5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be4026610f3dfd44dfaff30252b3005.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
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2022-03-11更新
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2卷引用:江西省临川一中暨临川一中实验学校2021-2022学年高二上学期期末数学(理)试题
解题方法
4 . 已知命题
:
,在下面①②中任选一个作为
: ,使
为真命题,求出实数a的取值范围.
①关于x的方程
有两个不等正根;
②
.
(若选①、选②都给出解答,只按第一个解答计分.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f18e65e62f1715b943713de35d2fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
①关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d12834afb9ab6b30e0c0b0a4c450c80.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4369a93efb9a481600d3809c853ac81e.png)
(若选①、选②都给出解答,只按第一个解答计分.)
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2022-03-01更新
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3卷引用:贵州省贵阳市普通中学2021-2022学年高二上学期期末监测考试数学(理)试题
贵州省贵阳市普通中学2021-2022学年高二上学期期末监测考试数学(理)试题贵州省贵阳市普通中学2021-2022学年高二上学期期末监测考试数学(文)试题(已下线)第02讲 常用逻辑用语 (精讲+精练)-3
名校
5 . 设命题
对任意
,不等式
恒成立;命题
方程
表示中心在原点,焦点在坐标轴上的双曲线.
(1)若命题
为真命题,则实数
的取值范围;
(2)若“
”为假命题,“
”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/69303621c56f67b4ec4e0ac575deb554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c614b07f1d2167c043a413bf4be852c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb2191d77bc82fa548a4fb58bc07951.png)
(1)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e29e70dc0bc2a9cf1a5feb67d439566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17312706507512c4215edf8b6e8c16d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2022-02-25更新
|
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2卷引用:四川省资阳中学2021-2022学年高二下学期开学考试数学(理)试题
名校
解题方法
6 . 已知命题
存在实数
,使得
成立:命题
对任意实数
,都有
成立.
(1)若命题
为真命题,求实数
的取值范围;
(2)若
是假命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2380f2daf2ad77fb1f3a0723936766f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ea50e712d62db3ca72cd4cb13d1833.png)
(1)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2022-02-21更新
|
123次组卷
|
4卷引用:陕西省渭南市白水县2020-2021学年高二上学期期末理科数学试题
名校
7 . 设命题 p :对任意实数x都有
恒成立;命题 q :存在实数 x 使得方程
有解.若“p或q”为真命题,并且“p且q”为假命题,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abdea09520a9022a2f1e07bf12afe6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16fde9469f2f47df1813cb0060173b8.png)
您最近一年使用:0次
名校
解题方法
8 . 已知命题
,
;命题
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c41780aaae8c12ff0cf977b8cc4bbb.png)
(1)若命题
为真命题,求实数
的取值范围;
(2)若命题
与
均为假命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bea9702708f8463975c94119fa50f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ca53b601f06ae9a5154acddf757792.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9395bb671c68b418ec6931cfc8366e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c41780aaae8c12ff0cf977b8cc4bbb.png)
(1)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若命题
![](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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2021-12-08更新
|
1048次组卷
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5卷引用:江西省赣州市赣县第三中学2021-2022学年高二5月月考数学(文)试题
名校
解题方法
9 . 若命题P:对于任意
,使不等式
为真命题,则实数
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec25b9d7ca47b780a744c2ebbf31d925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f47b082279626389674f4340343bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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6卷引用:四川省成都市树德中学2021-2022学年高二上学期11月阶段性测试数学(理科)试题
名校
解题方法
10 . 已知命题“
”为假命题,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/970acc7a5cdcdd70262f25054640a4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2021-11-28更新
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3卷引用:四川省阆中中学2021-2022学年高二上学期第三学月教学质量检测数学(文科)试题