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1 . 给出如下四个命题:
①若
,则
;
②若
,则
;
③不等式
的解集是
;
④若
,且
,则
.
其中正确命题的序号为___________ (写出所有正确命题的序号).
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f05930837039d924f84f12ec886733d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb54b1b3617ebc502cb44194cbcd1dc.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca24341509c05e672999202f2df0ebaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f7c54faca6eac8af5309942062058d.png)
③不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0b7345527910e03453d8657b2efbb02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/746f35ff3b1361027c4bce1361c88b68.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf9befc3b336d83b83bcfcbc19c0752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb524c1ed61704756d3af60e00be213.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d6559aa21f40e5c20d4373023760809.png)
其中正确命题的序号为
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2021-10-22更新
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642次组卷
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3卷引用:北京四中2021-2022学年高一10月月考数学试题