名校
1 . 给出下列四个命题:
①命题“若
,则
”的逆否命题为假命题;
②命题
,
.则
,使
;
③“
”是“函数
为偶函数”的充要条件;
④命题
,使
;命题
若
,则
.那么
为真命题.
其中正确的序号是_____ .
①命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4120436d6ff0c58109473edc068257c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffb8898d840443e228d34d94056f081e.png)
②命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bea9702708f8463975c94119fa50f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05611fbe265ef9e3d4a8b1821bcbc1eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34381f7ee85fee030450d78d33cafa19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a3ecba19917cb95ee17b82f1b4877c4.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd6c5fa58163834dfc862a11d89e49d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ba3522ee6b81e2c3552a82fc93def89.png)
④命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c8aa4b9ab6f097ecd288942230b6297.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be91c54832cbb241b6a32cb0fab85825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/116a4f1c8b51d1993e6d7c054e2ed5d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33c61cfbfd3bf888856b7dc9b2a84c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2e4974421a8728f8e2b0a8b068e47a.png)
其中正确的序号是
您最近一年使用:0次
2017-12-30更新
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439次组卷
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2卷引用:宁夏石嘴山三中2018-2019学年高二(上)第二次月考模拟试卷数学理科试题