命题“
,
”的否定是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8645952ea14b25443f411d39bdec641e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49d3a6268e9eded3dba57ab5d93cf556.png)
更新时间:2023-01-03 08:28:33
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【知识点】 特称命题的否定及其真假判断解读
相似题推荐
填空题-单空题
|
较易
(0.85)
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【推荐1】下列命题真命题的是__________ (填写序号).
①方程
有整数解;
②
,
的否定为
,
;
③
,使
得能被11整除;
④
,
的否定是
,
.
①方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0ff5e580c7b43e61eec12a55703182.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1485a4756c56f1126b9825d5019d544c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2b74d89854116e411c089d053df053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2b74d89854116e411c089d053df053.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2505dc9811bb5d5a6f9d2aa4ffb186c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ced8a20b0ac50c7b37ce2b2c24d9db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f7906f9faac3a41101e4c3cbd60414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1485a4756c56f1126b9825d5019d544c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199e9b71bddd6f73725518ab2d567b32.png)
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填空题-单空题
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【推荐2】给出以下四个命题:
①命题“若
,则
”的逆否命题是“若
,则
”
②命题“若
或
,则
”的否命题为真命题
③若
为假命题,则
均为假命题
④对于命题
,使得
,则
,均有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1c77d129b56255baf3d76eb2a6c2ff.png)
四个命题中,其中是真命题的序号是__________ .
①命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fdf7d28b97fb6fe731703f80e122ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a8a2a94168af9b16ce89271a5d8dc6b.png)
②命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d09b9fc9719ff6faf32254b9d48713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe436ba908c76027255f3a677bf0657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9b943869e5c96a5c7c79774f7a9bbd3.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
④对于命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fac11dd95cb4b78adb817fad02dedb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264dab145ceba44696a6ee63b1e1549d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19cd44731d509352f907c9773a42cab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1c77d129b56255baf3d76eb2a6c2ff.png)
四个命题中,其中是真命题的序号是
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