名校
1 . 以下命题正确的个数是
①“
”是“
”的充分不必要条件
②命题“
”的否定是“
”
③如果关于
的不等式
的解集不是空集,则
的取值范围是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.png)
④命题“在
中,若
,则
”的逆命题为假命题
①“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b25291ebe5baa53127e0a50e454488.png)
②命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc3308990379e057183369b6c54a233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27010286f7cc85b402cf2791b7df37d2.png)
③如果关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7b28f8a204c61ca2634aac8fe2a6867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.png)
④命题“在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca51be437b1a97ca92aa1159ab71102c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19dc38d888741a1b2e95fe0773a48c38.png)
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
A.0 | B.1 | C.2 | D.3 |