名校
1 . 若a,b,c均为正数,且
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee462ae9f94817cd2f7695858e7b7f83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16bf4141882f4641afab6e17a363631f.png)
A.12 | B.6 | C.5 | D.3 |
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2 . 若
,
,则使得
恒成立的
有( )个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d229cbec798c9c278a9b5979cb38247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347bb0738680cbc037c17d6ee58177a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4bd94cf781764a27dcad9d1d143c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.1 | B.2 | C.3 | D.2021 |
您最近一年使用:0次
2020-04-11更新
|
285次组卷
|
3卷引用:福建省莆田第二十四中学2019-2020学年高二下学期返校测试数学(文)试题
名校
3 . 已知
,则
的正负情况是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6521ac9dde2721d8d6c995906a77f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89759895c3447641e2fab64506c4f40b.png)
A.大于零 | B.大于等于零 | C.小于零 | D.小于等于零 |
您最近一年使用:0次
2020-03-27更新
|
276次组卷
|
2卷引用:河南省林州市第一中学(实验班)2019-2020学年高二3月线上调研数学(理)试题
4 . 设
为正数,
,则
与
的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c14d9ae06f864498048d55088ff4e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9d914b26aae2a434a7e2c9c524979b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知
,则
与
的大小关系为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/755e283c5f212dcd73dfaf71e544efde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
您最近一年使用:0次