1 . 命题
:方向相同的两个向量共线,
:方向相反的两个向量共线,则命题“
或
”为________ .
![](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)
您最近一年使用:0次
2 . 命题“全等三角形一定相似”的逆否命题是________ .
您最近一年使用:0次
名校
3 . 若命题
“
”,则“
”为_______________________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ec94884dd4bb909d202e38e17eb4ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
您最近一年使用:0次
2023-08-13更新
|
754次组卷
|
5卷引用:陕西师范大学附属中学渭北中学2022-2023学年高二下学期5月月考文科数学试题
4 . 下列四个命题,真命题的个数是________ .
①若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63af71b9e6f71cd26e6e97541154cd8c.png)
②
的充分不必要条件是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
③命题“
,
”的否定为“
,
”
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63af71b9e6f71cd26e6e97541154cd8c.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c22b9d08cf536bbb76bce1b0f135772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
③命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/899301a636c6ca1b072877441bcbcc59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3119d53efb32cd36255815c962be6ff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2a51de282f71171aeb8284c4a9cb1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f9fdc01e564d4c2e5f7d3c8d0f3db3.png)
您最近一年使用:0次
5 . 命题“
,
”的否定是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6855ba7967ae8afa478be2d08a83c109.png)
您最近一年使用:0次
2023-05-23更新
|
430次组卷
|
4卷引用:陕西省西安市西咸新区泾河新城第一中学2022-2023学年高二下学期5月质量检测文科数学试题
6 . 写出命题“任何有理数都是实数”的否定:___________________ .
您最近一年使用:0次
7 . 已知命题
:双曲线
的渐近线方程为
,命题
:双曲线
的离心率大于2,命题
:方程
有实数解,现有下列四个命题:①
;②
;③
;④
.其中所有真命题的序号为_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348aca26e61218d251581e21c1129a8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/060e229870f126b31e37965bc0c58667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d86c392fcc9b8835f90afb74ed30a72f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ccfa090343b3b92bc10ce10b75ff617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e743a11b4ee929c043c3d921fdc0b3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73fc0506a5ba900b169b2b794a97d984.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efcc456ba77fb1fed79b06f3ed69cef8.png)
您最近一年使用:0次
2023-03-11更新
|
88次组卷
|
2卷引用:陕西省商洛市2022-2023学年高二上学期期末理科数学试题
名校
解题方法
8 . 已知命题
是假命题,则实数
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b91a47c991f43a8ca4f4202f9ff7f06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-02-19更新
|
518次组卷
|
4卷引用:陕西省咸阳市2022-2023学年高二上学期期末文科数学试题
9 . 当命题“对任意实数
,不等式
恒成立”是假命题时,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0f780de095f6f9173208713e21f8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2023-02-15更新
|
146次组卷
|
2卷引用:陕西省汉中市2022-2023学年高二上学期期末文科数学试题
10 . 若命题“对于任意的实数
,使得
恒成立”的否定是假命题,则实数
的取值范围为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391757a4cd157aa1989df44f5e4ef78f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9228e710dc97e9afb18cc4c79f461f06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-02-14更新
|
117次组卷
|
2卷引用:陕西省宝鸡市渭滨区2022-2023学年高二上学期期末文科数学试题