题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020121-54401.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020122-50992.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020122-49860.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020122-51546.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020122-50992.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020123-41224.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020124-40335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020124-68086.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020124-69603.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020124-65325.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020124-73660.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020125-72509.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020125-32442.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020125-11243.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020122-51546.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020125-45138.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020125-85811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020126-73731.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020126-53692.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020048-27338.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020048-85157.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020048-36945.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020049-48801.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020049-20882.png)
(2)证明
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020049-96715.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020049-20882.png)
(3)证明
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020049-84880.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020049-20882.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020021-40902.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020021-49997.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020022-95102.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020022-21794.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020022-31453.png)
(1)确定
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020022-17201.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020022-33659.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020023-97770.png)
(3)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020023-97770.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020023-33432.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020002-44905.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020002-45924.png)
(2)记
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020002-16376.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020002-45924.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020002-20626.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020003-76533.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018020003-30038.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015938-44512.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015938-16922.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015938-71980.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015938-73484.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015938-68390.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015938-19037.png)
(2)证明:当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015938-79390.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015938-16922.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015939-38588.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015920-17728.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018015920-24281.png)
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