题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005637-48353.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005637-41812.jpg)
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005638-39182.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005638-97384.png)
故
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005638-14534.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005632-44031.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005626-86443.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005626-80159.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005626-30573.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005627-88533.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005627-86149.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005627-26597.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005626-86443.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005621-83020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005615-37645.png)
⑴求a和b的值;
⑵△
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005616-59834.png)
△
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005616-59834.png)
ⅰ)设x秒后△
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005616-59834.png)
ⅱ)几秒后重叠部分的面积等于
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005616-27091.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005616-76817.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005601-20391.png)
(1)当点A第一次落到
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005601-20391.png)
(2)若线段AB与
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005601-20391.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005602-79130.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005602-50809.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005602-83747.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005602-83747.png)
(3)设旋转角为
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005602-20529.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005602-20529.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005602-99739.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005603-89859.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108005603-21146.png)
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