已知函数
.
(1)若
,求
的单调区间;
(2)若函数
有两个极值点
,
,且
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da86c33fca8699b4236f19a10de2f48.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf01377399cf983f9dd989a4ce6d2885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6a1f09b2f92d21a568604e2143dad03.png)
更新时间:2022-07-09 18:56:20
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名校
【推荐1】已知函数
.
(1)讨论函数的单调性;
(2)若方程
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.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecbbd36103e5f00201ab1ec0c8786932.png)
(1)讨论函数的单调性;
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【推荐2】已知函数
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(1)当
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(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
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(2)设
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【推荐3】已知函数
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(2)当
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解题方法
【推荐1】 已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca5755c4a6eeb8dac293711af67f9aa.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
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![](https://img.xkw.com/dksih/QBM/2017/7/19/1733353706102784/1734184396996608/STEM/1179b0e9bc684f1aa7288f327187f5ef.png?resizew=3)
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