以下两个命题:(1)
,使得
;(2)
,
.
其中正确的是________________ .(写出所有真命题的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1485a4756c56f1126b9825d5019d544c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d2d8d86eab880cbb364a117ffb9fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba775e0260ffbe30df0600b8dc5cf5fb.png)
其中正确的是
10-11高二·福建福州·期末 查看更多[1]
(已下线)2010-2011学年福建省福州市高二期末理科考试数学试卷
更新时间:2016-11-30 21:00:35
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【推荐1】设A,B为两个非空集合,则下列四个命题中真命题的序号是______ .①
对任意
,都有
;②
;③
;④
存在
,使得
.
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您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
【推荐2】对于函数
,现给出四个命题:
①
时,
为奇函数;
②
的图象关于
对称;
③
时,方程
有且只有一个实数根;
④方程
至多有两个实数根
其中正确命题的序号为__________ .
![](https://img.xkw.com/dksih/QBM/2015/12/10/1572351240077312/1572351246090240/STEM/a7aa9b5b63504ac7b8612872251502ec.png?resizew=140)
①
![](https://img.xkw.com/dksih/QBM/2015/12/10/1572351240077312/1572351246090240/STEM/91b66410cdfd4499b02c23add720e466.png?resizew=39)
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②
![](https://img.xkw.com/dksih/QBM/2015/12/10/1572351240077312/1572351246090240/STEM/9965fb61cbf644aca84c04d9925bbd86.png?resizew=61)
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③
![](https://img.xkw.com/dksih/QBM/2015/12/10/1572351240077312/1572351246090240/STEM/2ab5ce4247b64f22bd80de2abc13e900.png?resizew=79)
![](https://img.xkw.com/dksih/QBM/2015/12/10/1572351240077312/1572351246090240/STEM/17184c2c32e1430fba7e60ba9d21a012.png?resizew=60)
④方程
![](https://img.xkw.com/dksih/QBM/2015/12/10/1572351240077312/1572351246090240/STEM/17184c2c32e1430fba7e60ba9d21a012.png?resizew=60)
其中正确命题的序号为
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