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1 . 设
是定义域为
的函数,命题
“
,
”,则命题
的否定是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6422b9c2e93a91fe9e39ce4d9dabb0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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2023-11-20更新
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2 . 已知命题
:
,则
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1a25a6880e5d0b6c4563174c9f95912.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
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3 . 已知命题
,则
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c56230a3065b736de0e4a4f412e5aa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2023-05-19更新
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四川省南充市高坪区南充市白塔中学2022-2023学年高一下学期期中数学试题福建省福州延安中学2022-2023学年高二下学期会考第二次模拟考试数学试题陕西省西安市第三中学2022-2023学年高二下学期第二次月测评理科数学试题(已下线)模块四 专题2 暑期结束综合检测2(基础卷)(已下线)第02讲 常用逻辑用语(练透6大重点题型)-【练透核心考点】
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4 . 下列叙述中,错误的是( )
A.命题“![]() ![]() ![]() ![]() |
B.命题“若![]() ![]() |
C.命题“不等式![]() ![]() |
D.已知三角形![]() ![]() ![]() |
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5 . 已知命题
;命题
.则下列命题中为真命题的是()
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e04e72a4310a75f60b57770029a2875f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f092aeb5611a1b4e713e0c505296d848.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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6 . 已知命题
:
,
;命题
:直线
与直线
互相垂直,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/8ccd7af9298cd5ff19d8866fedb42ec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee1bc020c608b39ea910dd6486207df4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a4f79fe56ec563ef8a043bdd9ef4b30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/526ce6f6edc0a79b5512f82a6d3ce8a0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 命题“
”的否定是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6563f8eac0d6f3dd1ed119875a140c4f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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8 . 命题“
”的否定是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f09abe013c9563037c73fc1e0439eca.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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9 . 已知命题
.若命题
为假命题,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da22fefc4acc34d887dc6ab83cf52fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e434d52b7741e42c21c2785eb07ffcaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 以下说法正确的有( )
(1)
最小值为
;(2)
对
恒成立;
(3)
且
,则必有
;
(4)命题“
,使得
”的否定是“
,使得
”;
(5)实数
是
成立的充要条件;
(6)设
为简单命题,若“
”为假命题,则“
”也为假命题.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64981b4c9ce3570aab2db453cb79bf4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48fe5d9cbe4f83926f5c21912df67a2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d89ab55ffb93cc48f077b542dbd25aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f50ce6b511e6b928796e048fc7fa5c.png)
(4)命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1485a4756c56f1126b9825d5019d544c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1c77d129b56255baf3d76eb2a6c2ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1c77d129b56255baf3d76eb2a6c2ff.png)
(5)实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b21208364124b5c477b2ff8df1c2e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bc539c71b72aff71e7c8e31e74969d1.png)
(6)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d4eed113aa69a7d973c6410bae7ddf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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