题目
题型:解答题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040135-27898.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040135-44762.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040136-55199.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040136-99334.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040136-99334.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040136-43899.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040136-99334.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040136-99334.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040136-43899.png)
解析
试题分析:(1)由
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040135-44762.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040136-55199.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040136-99334.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040136-99334.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040136-43899.png)
试题解析:
(1)依题意有
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040137-85365.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040137-51405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040137-99533.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040137-62854.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040138-56058.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040136-99334.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040138-20556.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040138-80111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040138-94000.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040138-20556.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040138-80111.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040138-89367.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040139-87262.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040139-68707.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040139-51552.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040139-76052.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040136-99334.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040136-43899.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040129-51099.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040129-94703.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040129-73345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040130-91473.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040129-51099.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040130-74985.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040130-83914.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040120-84351.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040120-86505.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040120-84295.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040120-57037.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040121-88198.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040120-57037.png)
(3)若
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040121-99466.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040121-14534.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040121-48066.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040121-16143.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040122-27977.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040121-14534.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040110-53126.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040110-25023.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040110-86122.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040110-92011.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040110-97392.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040111-69657.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040111-53235.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040111-45230.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040111-10022.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040111-24341.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040110-25023.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040111-25272.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040112-36762.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040106-21367.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040106-56551.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040106-20858.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040106-81081.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040107-38092.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040107-55819.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040107-41965.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040107-37355.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040059-27340.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040100-78522.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190818/20190818040100-26811.png)
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