1 . 已知函数
在
处取得极值.
(1)求
的值;
(2)若关于
的方程
在
上恰有两个不等实数根,求
的取值范围;
(3) 求证:
.
【参考数据:
】
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d45e2f0e655036be68c760662990652.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66ee50ed8900698e92e610f212678873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7fefece0cf6660a409832f72dff95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3) 求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bf495a0d9ee85f1e8e06b0c7ff3cbba.png)
【参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b274ed7f165dfb1af81a66a0a8bc5734.png)
您最近一年使用:0次
2016-12-04更新
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447次组卷
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2卷引用:2015-2016学年湖北黄冈中学高二下学期周末测试数学试卷