对于实数
或
.试判断p是q的什么条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/422533f637999d4300b7fc946e266b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed6f12ee54d72aebccd5a0444fdec8d.png)
更新时间:2020-02-05 10:53:16
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【知识点】 判断命题的充分不必要条件
相似题推荐
解答题-问答题
|
较易
(0.85)
【推荐1】下列所给的各组p, q中,p是q的什么条件?(在“充分不必要条件”“必要不充分条件”“充要条件”“既不充分也不必要条件”中选出一种)
(1)p:x>1,q:x2>1;
(2)p:四边形的对角线相等,q:四边形是矩形;
(3)p:两个三角形相似,q:两个三角形的对应角相等;
(4)p:x2-1=0,q:|x|-1=0.
(1)p:x>1,q:x2>1;
(2)p:四边形的对角线相等,q:四边形是矩形;
(3)p:两个三角形相似,q:两个三角形的对应角相等;
(4)p:x2-1=0,q:|x|-1=0.
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解答题-问答题
|
较易
(0.85)
【推荐2】已知命题
;命题
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3276b5e12396fc4753eb3f8254f9fa68.png)
(1)若命题
是命题
的充分不必要条件,求
的取值范围;
(2)
,若
为假命题,
为真命题,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99200f48d4274fad83cc2485ae383b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93d3447fc5dcfc4e2bcdac46bb7fca3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3276b5e12396fc4753eb3f8254f9fa68.png)
(1)若命题
![](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/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764eff906937f9b1fb58e5abfb2eb8a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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