名校
1 . 若函数
在
处取得极大值,则实数
的取值范围是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd6a2343eb9d59f6d5f655837275d39c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbef0a1750d3f9a0ac59a7677ec833a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
2 . 若函数
在
处取得极大值或极小值,则称
为函数
的极值点.
设函数
,
.
(1)若
有两个极值点
,且满足
,求
的值及
的取值范围;
(2)若
在
处的切线与
的图象有且只有一个公共点,求
的值;
(3)若
,且对满足“函数
与
的图象总有三个交点
”的任意实数
,都有
成立,求
满足的条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05cbed9e2911c9fc7972d958f34b7148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbf1211335bcbc0ebb05414669eda0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f7b544bb397d052b93e8398fb6bdcef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd42f780c2a802ec023ca445d193a5e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e15678934055bfa841df6b3d00a520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81c1e13a26f59e291019cc0b143f1f26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c79524ae8e494739dbcc5097a0f7c78a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9ffcb2f75f387d33f1a475090c7a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd330acca8e17f5ff9aca1f0f312df50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de2837abd845b0adcc742a10539b4a7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99f5018202989d1ba937e75e058573cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8bdc402fb16e6506c166f668a81e32.png)
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