设
,
.
(1)求
在
处的切线方程;
(2)令
,求
的单调区间;
(3)若任意
且
,都有
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc873fc03e6e4d3c4ba02f8b1147b20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c03787d960a923b1d980edd67750eee4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d92dac50074dcfad46997b537c7cf3bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
(3)若任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b015c5de7880eebc4f5d7d02755ce4ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2210f152080d9a68a97c805f5c1cde96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33ef5bdba9a82cf5b59b44c8b9c8ef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2018-01-14 21:27:13
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