1 . 已知函数
(
为实数).
(1)当曲线
与直线
切于点
时,求
,
的值;
(2)设
,如果
在
上恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f19be9a99f38f0e217f315d0361079ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)当曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e6668ebeaece0d93ef3e0ffd2aad683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572dac426f859dcb1eecfa75d7d823ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbf1211335bcbc0ebb05414669eda0.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7feeefda492f955aa256d6ef2a3f621b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18b0dc000d934faaa3e212c01904add2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cead849c0dc4a82285808a7e081ad75c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2018-03-11更新
|
1087次组卷
|
4卷引用:2018年湖南省高三十四校联考文科数学
2 . 函数
,若
,使得
都有
,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e37a915e369d890670c8af1e8154fe8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fc23491b089059ace9e969c19bd1ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d4ae5bb621c3c9ef864b81f8db58dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638caa13d2039105f607cc9d9b0f4ab3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
3 . 已知
,函数
,
(
是自然对数的底数).
(Ⅰ)讨论函数
极值点的个数;
(Ⅱ)若
,且命题“
,
”是假命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5d5f3fced276f3127f2e3c0c428f9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9f357eae697e6758b13b7a13b593f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d218992d1942266d7208e476d0c4100.png)
(Ⅰ)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d176e1fcf07f69f98de820bf524236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba6f008ca86a6fe6b2b467254e388cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2017-05-10更新
|
2038次组卷
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4卷引用:2019届湖南省岳阳市第一中学高三第二次模拟数学(理)试题