1 . 已知关于
的方程
.
(1)求证:无论
取什么实数,这个方程总有两个不同的实数根;
(2)若这个方程的两个实数根
,
满足
,求
的值及相应的
,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1a248d6f64317812bf4e4761fc1f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32fd52d46f31c434947c611baa9ef20.png)
(1)求证:无论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若这个方程的两个实数根
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44e696efc432f5f0a416f477d95b8f71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e1cad2f00ce41845a8e327f8c6435d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b90c5cf268aecb16c0fa56e8033dad6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79135017d42246c6ea8eeb50deb6a19e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788ca95e86e64f9df274f0c957772fc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccf18ecada3530dde5dc00b560b3eb22.png)
您最近一年使用:0次
2 . 已知
,函数
.
(1)证明:函数
在
上单调递增;
(2)求函数
的零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aba4208cdac18bf24ad510bc26a5994.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次