题目
题型:解答题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024623-71778.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024623-52182.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024623-78633.png)
(1)证明:
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024624-97257.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024624-20556.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024624-56185.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024624-56185.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024624-87385.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024624-20512.png)
解析
试题分析:(1)根据题中条件并利用
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024625-16383.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024624-97257.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024625-56681.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024625-35073.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024624-56185.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024624-56185.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024624-87385.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024625-61769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024625-44621.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024626-86401.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024624-87385.png)
试题解析:(1)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024626-35334.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024626-27455.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024626-19593.png)
(2)由
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024624-20556.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024626-13937.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024626-99567.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024626-35334.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024627-88749.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024627-41950.png)
将
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024625-56681.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024627-54961.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024627-65246.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024627-36288.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024628-31638.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024623-52182.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024628-60838.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024628-45979.png)
对
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024623-52182.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024628-99728.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024624-87385.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024628-20151.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024629-31950.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024629-94371.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024629-81929.png)
核心考点
试题【已知,当时,.(1)证明:;(2)若成立,请先求出的值,并利用值的特点求出函数的表达式.】;主要考察你对一次函数的图象和性质等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024620-29046.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024621-71229.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024614-21107.png)
(Ⅰ)若方程f(x)=0在[-1,1]上有实数根,求实数a的取值范围;
(Ⅱ)当a=0时,若对任意的x1∈[1,4],总存在x2∈[1,4],使f(x1)=g(x2)成立,求实数m的取值范围;
(Ⅲ)若函数y=f(x)(x∈[t,4])的值域为区间D,是否存在常数t,使区间D的长度为7-2t?若存在,求出t的值;若不存在,请说明理由(注:区间[p,q]的长度为q-p).
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024607-97796.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024607-98773.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024607-27966.png)
(1)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024607-59239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024608-59704.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024608-41112.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024608-23188.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024608-75823.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024609-60450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024609-43203.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024609-54286.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024609-23298.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024610-36582.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024559-18002.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024559-40878.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024559-41188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024559-41358.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024600-40481.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024600-23533.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819024600-76178.png)
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