解题方法
1 . 已知函数
(
,
)的一系列对应值如表:
(1)根据表格提供的数据求函数
的一个解析式;
(2)根据(1)的结果:
①当
时,方程
恰有两个不同的解,求实数
的取值范围;
②若
,
是锐角三角形的两个内角,试比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a62f27ea19cb994c52f779be3ff1ecc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)根据(1)的结果:
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec5d200b561e4be52ccaaebdc3105d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43abcfd12d6b0922a7ee46b687b47557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/677e8a1b1cbe10c34c294a15b6bcb83d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cf8842f549081cf0cf000061ebfac03.png)
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