名校
1 . 下列说法正确的是( )
A.“若![]() ![]() ![]() ![]() |
B.“![]() ![]() ![]() ![]() |
C.“若![]() ![]() |
D.“![]() ![]() |
您最近一年使用:0次
2 . 设命题
,使
是幂函数,且在
上单调递减;命题
,
,则下列命题为真的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26c789f3a4bbab386708c08415fc273a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b9a4c03c62afab5c99384bd0fca82b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665fd98b2ad8b12144d1002c358f3834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf8de41bd48f0c7b39075b665aacea09.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-11-10更新
|
589次组卷
|
3卷引用:四川省绵阳市南山中学2020-2021学年高三下学期开学考试数学(理)试题
2013·四川乐山·一模
名校
3 . 下列命题为真命题的是
A.若![]() ![]() |
B.“![]() ![]() |
C.命题“若![]() ![]() ![]() ![]() |
D.命题p:![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2016-12-02更新
|
880次组卷
|
5卷引用:2013届四川省乐山一中高三5月高考模拟理科数学试卷
名校
4 . 设
,命题:若
,则
有实根的否命题是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac671e6d87de2fb5f7ad3aab582866d.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
2017-02-08更新
|
412次组卷
|
3卷引用:四川省泸州市泸县第一中学2020-2021学年高三上学期一诊模拟考试理科数学试题
11-12高三·四川攀枝花·阶段练习
5 . 设
是实数,命题“若
,则
”的逆否命题是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec8f6a68e0710eb8da47d9f2039c640.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421a473589d5abdd504fdb110828611a.png)
您最近一年使用:0次
6 . 下列四种说法中:
①命题“存在
,
”的否定是“对于任意
,
”;
②命题“
且
为真”是“
或
为真”的必要不充分条件;
③已知幂函数
的图象经过点
,则
的值等于
;
④已知向量
,
,则向量
在向量
方向上的投影是
.
其中说法错误的个数为
①命题“存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799b324b514d6044672c133d8fef2dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ef65b4857051425b927d056d5d07f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c23a4b7f6952b9e323301bc917a94e99.png)
②命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
③已知幂函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e719252ceff26414b576dcf546f39f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5cd10ac668b6d968c579147b46c690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54bd888bfb31bdd6cddc28e687304406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
④已知向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21e2f1ab7c983cd9328fdc6e281949f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe4aa7751ac7cdaf57eeec30291d45e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
其中说法错误的个数为
A.1 | B.2 |
C.3 | D.4 |
您最近一年使用:0次