题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013753-52083.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013753-16472.png)
解析
试题分析:由于
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013754-33419.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013754-50453.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013754-95775.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013754-95775.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013754-50453.png)
试题解析:设
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013754-60995.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013755-49942.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013755-50944.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013755-14618.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013755-12977.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013756-45614.png)
又∵
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013756-26750.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013756-78508.png)
∴设
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013756-96780.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013757-76093.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013757-11629.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013757-12931.png)
即
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013757-88606.png)
由于
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013758-37587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013758-23621.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013758-62744.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013759-49393.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013759-64728.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013759-47488.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013759-95984.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013747-53117.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013747-82565.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013747-35289.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013748-35593.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013748-46300.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013738-13319.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013738-97313.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013738-63969.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013738-12827.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013738-42264.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013738-42264.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013738-80779.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013738-44183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013738-77144.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013739-92471.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013739-39030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013739-53321.png)
①设
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013739-31612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013739-74654.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013739-14261.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013740-93185.png)
②设
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013739-31612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013740-22947.png)
③设
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013739-31612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013739-74654.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013740-80773.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013740-94341.png)
④设
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013739-31612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013739-74654.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013740-44620.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013740-65790.png)
⑤设
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013740-62321.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013740-12034.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013741-27878.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013741-84827.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013741-51962.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013741-13284.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013741-69505.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013728-11435.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013728-46359.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013728-98683.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013728-66781.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013729-73198.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013729-17401.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013729-82192.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013719-21126.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013719-66674.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013719-63520.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013719-75184.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013720-82414.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013720-27644.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013711-67264.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013711-47298.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013711-90968.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013711-27059.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013711-30562.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013712-33560.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013712-11349.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013711-47298.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013711-90968.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013711-30562.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013712-82485.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013712-41382.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013712-50002.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105013711-47298.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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