设有下列四个命题:
:
,
;
:
,
;
:方程
有两个不相等实根;
:函数
的最小值是2.
则下述命题中所有真命题的序号是__________ .
①
;②
;③
;④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/398c86b2f8709b50501efee23c5d5b2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adad9633b73dfbbb3d84b4f15979e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e253b0c99440bcfe689bef0fedfbfdeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80e0cacf39741a7dd67c9df2de25f89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b21b872313f7d8c5b606981f954a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9acf4ad45157af36b2979af91e3f8b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc119550ce4fc5f3d1daf996e7243bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1254fba8c4b362c4686c838686396be3.png)
则下述命题中所有真命题的序号是
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d7af433a01e0819931d64d634b705e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e777d012ec11f12fd01322879053af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd03e29d570e4c54cd4a329f76e8435f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b798cc94cdc2c9e71b9ab8227877ac2.png)
2021·云南昆明·模拟预测 查看更多[9]
云南省昆明市第一中学2021届高三第八次考前适应性训练数学(文)试题云南省昆明市第一中学2021届高三第八次考前适应性训练数学(理)试题黑龙江省鹤岗市第一中学2020-2021学年高二下学期期末考试数学(理)试题吉林省长春外国语学校2020-2021学年高二下学期期末考试数学(文科)试题吉林省长春外国语学校2020-2021学年高二下学期期末考试数学(理科)试题(已下线)模块综合练01 集合与常用逻辑用语-2022年高考数学(文)一轮复习小题多维练(全国通用)(已下线)专题一 能力提升检测卷 (测) - 2022年高考数学一轮复习讲练测(课标全国版)(已下线)专题1.3《集合与常用逻辑用语》单元测试卷 - 2022年高考数学一轮复习讲练测(新教材新高考)(已下线)专题02 常用逻辑用语-备战2022年高考数学(文)母题题源解密(全国乙卷)
更新时间:2021-04-30 16:48:18
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