名校
1 . 若
,则下列不等式不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca24341509c05e672999202f2df0ebaf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-07-26更新
|
187次组卷
|
3卷引用:江西省九江第一中学2020-2021学年高一下学期期末考试数学试题
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2 . 已知函数
,如果对任意一个三角形,只要它的三边长
都在
的定义域内,就有
也是某个三角形的三边长,则称
为“保三角形函数”.在函数①
,②
,③
中,其中________ 是“保三角形函数”.(填上正确的函数序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699d32dbd2b31b313ae7154c9a072775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028d1ab6db7a84388d06d1fce5c46891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c030510661c037ba71556dbdb3956f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c517b4df5672012be660e079bd45f518.png)
您最近一年使用:0次
2016-12-04更新
|
281次组卷
|
3卷引用:2015-2016学年江西省九江市一中高一上学期期末数学试卷
9-10高三·四川成都·阶段练习
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3 . ①若
,则
.②若
,则
.
③若
则
.④若
则
.
其中正确命题的个数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4dd37454a4d8a8ab9321f3ce1e85bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/443dd938cf51421ff3a000d50b56eded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd5a784d15393607164f20a71f656eb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef331f94cef74af7a625084adbbafdd.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa75e187eb6a889f65d1b7dea1a81d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8cf14982900b008c48eebcc77a1d5ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35ecdcfd26b89c12fcff8918fce6a6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a92eab4a813eeaf0a5c04111c81148cc.png)
其中正确命题的个数为
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次