1 . 命题“若
,则
或
”的否命题是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd9cdea1e995c59e5d3225acad8b4d3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
A.若![]() ![]() ![]() | B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() ![]() |
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2023-08-15更新
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2卷引用:四川省绵阳市三台县2022-2023学年高二下学期期中教学质量调研测试数学(文)试题
解题方法
2 . 已知函数
在
上为减函数,命题
为假命题,则
的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e09579466f29fcf1c1c69f7a172484b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc70cb5bca1e18e0507e7885ecbe4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0466b5c05dbb1304026069b8482abaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2023-07-12更新
|
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5卷引用:四川省绵阳市2022-2023学年高二下学期期末数学(理)试题
四川省绵阳市2022-2023学年高二下学期期末数学(理)试题(已下线)第四章 三角函数与解三角形 第一节 任意角、弧度制及任意角的三角函数(核心考点集训)广东省阳江市2024届高三上学期开学适应性考试数学试题(已下线)专题05 三角函数4-2024年高一数学寒假作业单元合订本(已下线)4.1 任意角、弧度制及任意角的三角函数值(高三一轮)【同步课时】提升卷
3 . 已知
,命题
“
”,命题
“
”
(1)若命题
为假命题,求实数
的取值范围;
(2)若命题“
”为真命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d58e7d1be651a643de90befb1919af83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cff86bf20a0be94a7498d65f0ed79316.png)
(1)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e29e70dc0bc2a9cf1a5feb67d439566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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4 . 下列命题正确的是( )
A.命题“![]() ![]() ![]() |
B.命题“若![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.命题“![]() ![]() ![]() ![]() |
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2023-06-26更新
|
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4卷引用:四川省绵阳市三台中学校2023届高三一诊模拟考试数学(理)试题(四)
名校
5 . 已知
:方程
表示圆:
:方程
表示焦点在
轴上的椭圆.
(1)若
为真命题,求实数
的取值范围;
(2)若命题
为真,
为假,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445c7b8bf47851c1f7a45c6c13b2a96c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1852da59c20e879d3c5ac274a1f6e066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)若
![](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/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
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2023-05-20更新
|
109次组卷
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2卷引用:四川省江油中学2022-2023学年高二下学期第一次阶段考试数学(文)试题
6 . 与命题“若
,则
”等价的命题是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a27dd329517f0dd8f1d0dfade6138ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab92728b35ed5798e07a2b0095bfcc1.png)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
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7 . 下面说法正确的有( )个
①
,
②若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dea4bfa6c5cebd0479f7cbfba64c510.png)
,
③命题“若
,则
”的否命题为真命题,
④命题“若
,则
有实根”的逆否命题为真命题.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d44011b51454a70d56d6da756cdea9c.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baea4ea1d1b536bc25df037f3664811a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dea4bfa6c5cebd0479f7cbfba64c510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72a54f70277b05bad8bca2c44b0cb0f.png)
③命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199e9b71bddd6f73725518ab2d567b32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ccaa6e503b61e9ae78d8439cba2e328.png)
④命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347c62b44fae618a37c145b3b5d1f1db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5707186257494f1fea86066f2778b5.png)
A.1个 | B.2个 | C.3个 | D.4个 |
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8 . 与命题“若a,b,c成等差数列,则a+c=2b”等价的命题是( )
A.若a,b,c不成等差数列,则![]() | B.若2b=a+c,则a,b,c成等差数列 |
C.若![]() | D.若a,b,c成等差数列,则![]() |
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9 . 已知a,
,则命题“若
且
,则
”的否命题是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd0914dc4d4c7f75710ff460a286fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fb20e291772c2614ad19f4cc919dfec.png)
A.若![]() ![]() ![]() | B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() ![]() |
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10 . 已知命题p:复数
(其中
).复数z在复平面内对应的点在第四象限.命题q:函数
在定义域的子集
中存在极值.
(1)若
是真命题,
是真命题,求实数m的取值范围.
(2)设命题r:
,已知“若
,则
”为真命题,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/856480a4e939a8081cde4358552dd062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec55ec3fae4b45d12651da37d281829f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b156f0540d4628d2e61aefdfeba74bb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
(2)设命题r:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdf7d1113914beb333fb99b13f1619c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/054e5a03edbe23d797d0da7add8ec11b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
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