1 . 给出以下四个命题:
①若函数
的定义域为
,则函数
的定义域为
;
②函数
的单调递减区间是
;
③已知集合
,则映射
中满足
的映射共有3个;
④若
,且
,
.
其中正确的命题有______ .(写出所有正确命题的序号)
①若函数
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573023778439168/1573023784714240/STEM/7de9c219ea3e4a0ab9f6fd2183e1546b.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573023778439168/1573023784714240/STEM/ad215dd9c6b34b2b956a6670c51c30f2.png?resizew=33)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573023778439168/1573023784714240/STEM/d3219da4069243bcbd0cd4b48ab9573d.png?resizew=44)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573023778439168/1573023784714240/STEM/a24a90d7c1a04b96b2627fef44b4c06f.png?resizew=33)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ede389b43c78417912542746d91d00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c8bd00a1b1c012681aab8513b755cbc.png)
③已知集合
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573023778439168/1573023784714240/STEM/00300b5f740a4135915cc837920830ec.png?resizew=165)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573023778439168/1573023784714240/STEM/f0b141be8aab44aea26a9fcb51d7945d.png?resizew=65)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573023778439168/1573023784714240/STEM/2f48eaab6ffb42a29a06898cff8794ba.png?resizew=59)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d742d95248b0405a80193874215697f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6855784817151468771f29c0fc38fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f3c0bfb693d79bac900c5ed642b309a.png)
其中正确的命题有
您最近一年使用:0次
2016-12-04更新
|
453次组卷
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3卷引用:2015-2016学年江西高安中学高二理重点班下期中数学试卷