解题方法
1 . 已知函数
,其中
.
(1)当
时,解关于
的不等式
;
(2)若
,
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b17a4b14ea764bdbe93aea9359bb7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5967cc62862986840af4dd29df4bcc41.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cfe951c0b4ddd9d007a147bef01a0c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
2 . 已知函数
,(
是实数)
(1)若
,求关于
的方程
的解;
(2)若关于
的方程
有三个不同的正实数根
且
,求证:
①
;
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c89ad4653e2dfd5ac801f6c591125930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28638f8c054a7bb4d9b46fde330bc76f.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5e27879428f93e05245c9fd861fcb71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67f266b8ffa43e3ed5302060fbee8dc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d51dd63e59efc11f8ddfb3e0569fb0d.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd43382118c285deb8627635e7277cfb.png)
您最近一年使用:0次