已知函数
.
(1)若曲线
在点
处的切线与直线
平行,求
的值;
(2)是否存在
使得
仅有一个极值点?若存在求出
的取值范围,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001fc9b77ffe162d613165c21f2a5fcf.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c88c3ffdaf116318bea4218c8d6c8618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f5b49f7ae023d75c6ca5c8d1ee7847b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2019-03-18 17:56:51
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1163769d8ece859951e6cf09f37154.png)
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