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1 . 下列有关命题的说法正确的是( )
A.命题“若![]() ![]() |
B.命题“若![]() ![]() ![]() ![]() |
C.命题“![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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2 . 下列说法正确的是( )
A.命题“若![]() ![]() ![]() ![]() |
B.若![]() ![]() |
C.“![]() ![]() |
D.![]() ![]() |
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解题方法
3 . 已知下列几个命题:其中结论正确的是( )
A.![]() ![]() ![]() ![]() ![]() |
B.“![]() ![]() |
C.已知命题![]() ![]() ![]() ![]() |
D.双曲线![]() ![]() |
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4 . 已知命题
若
,则
,命题
若
,则
则下列命题中真命题( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ccd5941a5a85812d8c5a14291f92cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b95d36ec16dda11d0dedcbe221fb03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39f8269ee6226045f1686d6344b6312.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b7eac0f1ef144fd45c6ba1e957d2c83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a5abe56c019ac914e1fcde1865a747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520c3a1c9cd10a0a7ad53a6aafc77b40.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知命题
:椭圆
与双曲线
有相同的焦点;命题
:函数
的最小值为
.下列命题为假命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2473f6794614494af42cb44bd8003b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5376456debba41d7ad2a74566ff292.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5646728bae56defee04ae39da44234a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 若命题p:
,
.命题q:对每一个无理数x,
也是无理数.则下列命题是真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efcd8a2dd390b606c243fedd9c31a8f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-02-10更新
|
280次组卷
|
3卷引用:湖南省益阳市2019-2020学年高二上学期期末数学试题
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7 . 下列4个说法中正确的有( )
①命题“若
,则
”的逆否命题为“若
则
”;
②若
,则
;
③若复合命题:“
”为假命题,则p,q均为假命题;
④“
”是“
”的充分不必要条件.
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若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/275b473b853a2679a4a5e7947b9f64a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd5a255edf1ba9d57b7138f0411c5e4d.png)
③若复合命题:“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
④“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d141f34f18f4802d04ef2e4e5e803aba.png)
A.① | B.② | C.③ | D.④ |
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8 . 若命题“
”为真命题,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e48ebdd742cb5d310c21a384d599bc6.png)
A.p为真命题 | B.![]() | C.q为真命题 | D.![]() |
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9 . 下列有关命题的说法正确的是( )
A.命题“若![]() ![]() ![]() ![]() |
B.![]() ![]() |
C.若![]() ![]() ![]() |
D.对于命题![]() ![]() ![]() ![]() ![]() ![]() |
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2020-12-02更新
|
221次组卷
|
2卷引用:福建省漳州三中2020-2021学年高二期中考试数学试题
10 . 下列说法正确的是
A.对于命题![]() ![]() ![]() ![]() |
B.“![]() ![]() |
C.命题“若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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