已知函数
.
(1)求函数
的单调区间;
(2)当
时,
恒成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a5869bc299083ccc575e613798c4e08.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1d3a3b2596516a939c4985fa878764.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/561480e3d3809613c33ce1f9c8890510.png)
更新时间:2020-06-05 21:51:19
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【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0068b9f2e0afdea55976c8d9ce9a2855.png)
(1)求
的单调增区间和单调减区间
(2)若
在区间
上的最小值为
,求实数
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0068b9f2e0afdea55976c8d9ce9a2855.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5451977bbf2f30c9488d76ef31c605b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75096deb06fa2aeaace0ec13f59c9ef1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01fe3c665aea8f799e1897073ddb345d.png)
(Ⅰ)求曲线
在
处的切线方程.
(Ⅱ)求
的单调递增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01fe3c665aea8f799e1897073ddb345d.png)
(Ⅰ)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea9824af71c9da5db5a00ec06063024.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
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【推荐3】设函数
.
(1)求
在
处的切线方程;
(2)求函数
的极值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13d49b02a4140acf18b83ea7afffd9c7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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解题方法
【推荐1】已知函数
.
(1)当
时,求曲线
在
处的切线方程;
(2)若当
时,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63cf0b39c50f7b1de395431b02057251.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d29c5c266a6d834a244c1f50c8f9848c.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4921923069c4f38a0af1ff8637e35b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5539cc3a6a9b1bda8013f0fd6760b4a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f5f7a36e251bbc424ccc127ebb2881.png)
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解答题-证明题
|
较易
(0.85)
【推荐2】已知函数
.
(1)求
的值.
(2)求证:
在
上恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52142482df6bbd431d300f011e3ccb12.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53161fb815fb3409d2143834aec80993.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168163183a3d4663be45755f44676191.png)
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