设函数
,
.
(1)若函数
在
上单调递增,求
的取值范围;
(2)设
,点
是曲线
与
的一个交点,且这两曲线在点
处的切线互相垂直,证明:存在唯一的实数
满足题意,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/226c6f419ddc9d4e0f4b103cdc5fe661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e663a09cdcde628b5633a6ab07dd55b.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa4bac43b27bfcdc3e3e26ee812eae83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93627eb4bfb9bea2a87ce92a237d9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0d139c9810361b4971904a943856b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbcc0dfa8adbb4e9952f72c4b26cc441.png)
更新时间:2018-02-22 10:47:58
|
【知识点】 函数单调性、极值与最值的综合应用
相似题推荐
解答题-问答题
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较难
(0.4)
真题
解题方法
【推荐1】(本小题共l4分)
已知函数f(x)=
x +
, h(x)=
.
(I)设函数F(x)=f(x)一h(x),求F(x)的单调区间与极值;
(Ⅱ)设a∈R,解关于x的方程log4 [
]=1og2 h(a-x)一log2h (4-x);
(Ⅲ)试比较
与
的大小.
已知函数f(x)=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f457e696b1504bfb73140699a8e18dd0.png)
(I)设函数F(x)=f(x)一h(x),求F(x)的单调区间与极值;
(Ⅱ)设a∈R,解关于x的方程log4 [
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1051b1d4e9f1161391a5ad34f57a7bb7.png)
(Ⅲ)试比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320fac80fc4070b2f181c8be1f6932bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e6486784415f3537c9a13556c05d893.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】已知函数
.
(1)直线
为曲线
在
处的切线,求实数
;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf04373b11100c7b151c3757aa89150.png)
(1)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a7108d77b8ad681a6b7573ecac0406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3dbf1aa99bd19b18b6c930d1df3aa04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f0c01c93ddbc7792e915164471908c4.png)
您最近一年使用:0次