若函数
在区间D上有定义,且
均可作为一个三角形的三边长,则称
在区间D上为“M函数”.已知函数
在区间
为“M函数”,则实数k的取值范围为_________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3380927f38157d81661c8f8ee681082a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25d6a8706efa5db0ee5ed13e68020e59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f909328384f9c52134243753d9c954ef.png)
更新时间:2022-12-19 12:07:54
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