1 . 对于实数a,b,m,下列说法:①若
,则
;②若
,则
;③若
,则
;④若
,且
,则
的最小值为
.其中是真命题的为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef019ee5c3eff526b479ba9482e8a16b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cdea94e587e9a385a3df0ea3d2d71d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86ddfc79ab750a8d2548e3a9e2b808b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58900a2822b9ff972d90440fced21584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1694f767d95499ef86d377afdc8bf08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b0113fd4c7d157757571f9a009e02af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
A.①② | B.②③ | C.③④ | D.①④ |
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2020-07-10更新
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4卷引用:江西科技学院附属中学2021-2022学年高二上学期期中考试数学(理)试题
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