名校
1 . 下列四个命题中真命题的个数是( )
(1)“
”是“
”的充分不必要条件
(2)命题“
,
”的否定是“
,
”
(3)“若
,则
”的逆命题为真命题
(4)命题![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
,
,命题![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
,
,则
为真命题
(1)“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fdf7d28b97fb6fe731703f80e122ed.png)
(2)命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05611fbe265ef9e3d4a8b1821bcbc1eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ccd7af9298cd5ff19d8866fedb42ec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e67e1423322138cfc68c5c85a6215d.png)
(3)“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91bcddc2ece6bcde9355e222e1cf9f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
(4)命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd18b91c1704fc0705ba3d8e10cb4f11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6e8f9a9b9a90e954c535e0d1847891c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ccd7af9298cd5ff19d8866fedb42ec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264dab145ceba44696a6ee63b1e1549d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2015-03-26更新
|
1475次组卷
|
5卷引用:2015年东北三省四市教研联合体高考模拟试卷(一)理科数学试卷
2019高三上·全国·专题练习
2 . 下列命题中,正确命题的个数为( )
(1)“
”是“
”的充分不必要条件;
(2)命题“若
都是奇数,则
+b是偶数”的逆否命题是“若
+b不是偶数,则
都不是奇数”;
(3)命题“∀
,
”的否定是“∃
,
”;
(4)已知p,q为简单命题,若¬p是假命题,则p∧q是真命题.
(1)“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c6cf9152e0d02b83eb22b01722d29c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18017013887fcfe1c60c960c2869ddcd.png)
(2)命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b15bd315b801f71bc30b8d772098614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b15bd315b801f71bc30b8d772098614.png)
(3)命题“∀
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d9c89d2cd1fb46b1e71ad10227c098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91441146667547f9619471cbfed71da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13eed78c0174f1cc1c8da7ee82a467aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfe0b367f3673375c9491603d1edf36e.png)
(4)已知p,q为简单命题,若¬p是假命题,则p∧q是真命题.
A.1个 | B.2个 |
C.3个 | D.4个 |
您最近一年使用:0次
名校
3 . 下列说法正确的是
A.命题“若![]() ![]() ![]() ![]() ![]() |
B.命题“![]() ![]() ![]() ![]() |
C.“![]() ![]() ![]() |
D.已知命题![]() ![]() ![]() |
您最近一年使用:0次
2016-12-03更新
|
584次组卷
|
3卷引用:2015届山西省太原市五中高三5月月考理科数学试卷
4 . 下列四种说法中,正确的个数有
①命题“
均有
”的否定是:“
使得
”;
②“命题
为真”是“命题
为真”的必要不充分条件;
③
,使
是幂函数,且在
上是单调递增;
④不过原点(0,0)的直线方程都可以表示成
;
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a48743a735c833f02c8955363311d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/175a7fc8d07909895962f8749a70d1ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c39fd43f4e3712e0d8b8eee44a4b0f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d53123159de41a775c72c0c68cad8d13.png)
②“命题
![](https://img.xkw.com/dksih/QBM/2016/1/4/1572412694585344/1572412700336128/STEM/551c542bfa144e2b9d7cf94a4cd8e112.png)
![](https://img.xkw.com/dksih/QBM/2016/1/4/1572412694585344/1572412700336128/STEM/50aea5b6597748e4a8ed586794ba5e63.png)
③
![](https://img.xkw.com/dksih/QBM/2016/1/4/1572412694585344/1572412700336128/STEM/c7597428395e4f0b945a2ddd49c83879.png)
![](https://img.xkw.com/dksih/QBM/2016/1/4/1572412694585344/1572412700336128/STEM/491a2e7839a2479b8681911c1e4e19f1.png)
![](https://img.xkw.com/dksih/QBM/2016/1/4/1572412694585344/1572412700336128/STEM/b1fcac86147b4358a7b5cd12c77bcb5f.png)
④不过原点(0,0)的直线方程都可以表示成
![](https://img.xkw.com/dksih/QBM/2016/1/4/1572412694585344/1572412700336128/STEM/6620e15916ba411d9c2af5fd04055d7d.png)
A.3个 | B.2个 | C.1个 | D.0个 |
您最近一年使用:0次
5 . 已知命题p:
.则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9075ae427706e17c704f8828dbb362cb.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
您最近一年使用:0次