名校
1 . 已知
:关于
的方程
至多有一个实数解,
.
(1)若命题
为真命题,求实数
的取值范围;
(2)若
是
的必要不充分条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73de0f9467533d375b0a5a81a5642a3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19ea32365c969826893b904f3b62acdb.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/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2021-11-11更新
|
380次组卷
|
2卷引用:四川省仁寿第二中学2023-2024学年高三上学期第一次教学质量检测数学(文科)试题
2014·四川成都·一模
名校
2 . 已知命题
,命题
,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ef53a66e9a331ec8b8d570a9cb10ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a140550249bad273afb5bb1b170475.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ad0d9291bac9385f7bdb3250227ba3.png)
A.命题![]() | B.命题![]() |
C.命题![]() | D.命题![]() |
您最近一年使用:0次
2019-06-05更新
|
800次组卷
|
10卷引用:四川省阆中中学2020-2021学年高三上学期开学考试数学(文)试题
四川省阆中中学2020-2021学年高三上学期开学考试数学(文)试题(已下线)2014届四川成都七中高三3月高考模拟考试理科数学试卷四川省成都华西中学2020-2021学年高三上学期期中数学(文)试题【全国百强校】甘肃省兰州市第一中学2019届高三6月最后高考冲刺模拟数学(理)试题【全国百强校】甘肃省兰州市第一中学2019届高三6月高考冲刺模拟数学(文)试题2020届安徽省安庆市第二中学、天成中学高三上学期期末联考数学(文)试题2020届宁夏六盘山高级中学高三上学期期中(B卷)数学(文)试题2020年普通高等学校招生全国统一考试文科数学样卷(二)(已下线)1.1+命题及其关系(基础练)-2020-2021学年高二数学(文)十分钟同步课堂专练(人教A版选修1-1)(已下线)1.1+命题及其关系(基础练)-2020-2021学年高二数学(理)十分钟同步课堂专练(人教A版选修2-1)
名校
3 . 下列4个命题:
①“如果
,则
、
互为相反数”的逆命题
②“如果
,则
”的否命题
③在
中,“
”是“
”的充分不必要条件
④“函数
为奇函数”的充要条件是“
”
其中真命题的序号是( )
①“如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f1a686b80b8f109a929f58c2de7201d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
②“如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a566ee5d2d5029fe2b63838ede01cecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
③在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a0631f6fc44eae7a0e369206d33d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d236e7315396d77ee666880edd1bef49.png)
④“函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070e57268ed65c8a60e89f1fb646f62a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fca1473d9e1b7c8cdf9f286c3f61513e.png)
其中真命题的序号是( )
A.①④ | B.①② | C.②④ | D.②③ |
您最近一年使用:0次
2021-05-07更新
|
377次组卷
|
2卷引用:四川成都市实验外国语学校2020-2021学年下学期高三开学考试文科数学试题
名校
4 . 已知命题
:
,
;
:
,
,则下列命题中为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734b3cfd6d6ed08a79cde5c4201d29f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6e8f9a9b9a90e954c535e0d1847891c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c7a319f1fb9ef4cd6bd9eb5ab0c53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1596380d6fe2090f1fe65169a7852af0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-10-24更新
|
759次组卷
|
3卷引用:四川省绵阳南山中学2020-2021学年高三上学期开学考试(零诊模拟)数学(文)试题
5 . 已知下列命题:(1)存在
,使得
;(2)“
”是“函数
为偶函数”的充分不必要条件;(3)
,使
成立;(4)已知两个平面
,
,若两条异面直线m,n满足
,
且
,
,则
;其中是真命题的有______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d229cbec798c9c278a9b5979cb38247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c765e3bbd5edb34239970779cf4cb5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0e7490f5a6ddb2feae7b184cc9d4dca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/067b23f555aeef86e843d71155fd6e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94f8287a86613c78187e69b258c2d5f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70835c9d209ddffdf3e97730bd61bce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539a38ada26356d73024fb8533449c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209323a7a4d015f7e570ec578c1731f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc01d7aa51bf4f95c4b12ae9dcb7eb4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df0d37b44de48de51555fa95d94e33f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384a65ca1ee3d7d86b988ca34c885e18.png)
您最近一年使用:0次
6 . 下列说法中正确的是
A.“![]() ![]() ![]() |
B.命题![]() ![]() ![]() ![]() |
C.命题“若![]() ![]() |
D.“![]() ![]() |
您最近一年使用:0次
7 . 设命题
,使
是幂函数,且在
上单调递减;命题
,
,则下列命题为真的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26c789f3a4bbab386708c08415fc273a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b9a4c03c62afab5c99384bd0fca82b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665fd98b2ad8b12144d1002c358f3834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf8de41bd48f0c7b39075b665aacea09.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-11-10更新
|
589次组卷
|
3卷引用:四川省绵阳市南山中学2020-2021学年高三下学期开学考试数学(理)试题
8 . 下列命题正确的是
①“
”是 “
”的必要不充分条件;
②函数
的对称中心是
(
);
③“
”的否定是“
”;
④设常数a使方程
在闭区间[0,2
]上恰有三个解
,
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35bacde908aec2c313978fc4309d82bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7500649a06834aba5a778d624ab56ad6.png)
①“
![](https://img.xkw.com/dksih/QBM/2015/3/31/1572051952041984/1572051957219328/STEM/9f62a5c7b5bb4e8db4be4c1c19ff3f94.png)
![](https://img.xkw.com/dksih/QBM/2015/3/31/1572051952041984/1572051957219328/STEM/3f6ed87ffc9f4daf908b128264d77e60.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb390c9f1102f2d17555d74ac243aa86.png)
![](https://img.xkw.com/dksih/QBM/2015/3/31/1572051952041984/1572051957219328/STEM/5ab1593eaa54456f97b07853af4644e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6029b3e81a9d7eeba4308d2362d35740.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d150f4f9281d03624e95313de93e256c.png)
![](https://img.xkw.com/dksih/QBM/2015/3/31/1572051952041984/1572051957219328/STEM/800a56a2bae146dfac913ff94ca16631.png)
④设常数a使方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/677b901b829cd0725ad8915853accc62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d5adfe85535b699655d5ed2f3322d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/659be8fe3555d24e9b63f882a52df109.png)
则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35bacde908aec2c313978fc4309d82bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7500649a06834aba5a778d624ab56ad6.png)
A.①③ | B.②③ | C.②④ | D.③④ |
您最近一年使用:0次