解题方法
1 . 已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)若
是增函数,求a的取值范围;
(3)证明:
有最小值,且最小值小于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/792c57367bafbfcc9931b68ef0a23cf1.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74156327e5659301f391814605688899.png)
您最近一年使用:0次
2023-04-25更新
|
1199次组卷
|
3卷引用:北京市丰台区2023届高三二模数学试题