题目
题型:填空题难度:简单来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062941-59342.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062941-77829.png)
答案
解析
试题分析:幂函数形式为
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062941-42223.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062941-27541.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062941-25866.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062942-29438.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062942-10682.png)
点评:幂函数的形式是
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062941-42223.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062931-16252.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062932-39630.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062932-53196.png)
(1)求实数
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062932-68811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062932-39630.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062932-39322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062932-81832.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062933-68882.png)
(3)试判断是否存在正数
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062933-51403.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062933-30672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062933-92478.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062933-67966.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062933-51403.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062924-13665.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062924-52406.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062924-32332.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062924-90036.png)
A.1 | B.2 | C.3 | D.4 |
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062922-48444.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062922-41757.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062922-44736.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062923-83040.png)
A.45 | B.55 | C.70 | D.80 |
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062920-77864.jpg)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062917-85183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062917-46457.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821062917-89695.png)
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