题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-90602.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-65275.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-35014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-32594.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085345-70170.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085345-68701.png)
解析
【错解分析】
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085345-70219.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085345-84940.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-35014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085346-52067.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085345-84940.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-35014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-32594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085345-70170.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-35014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-32594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-35014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-35014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-35014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-35014.png)
【正解】设过点
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-35014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-32594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085346-51976.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-35014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-32594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085346-95575.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085346-29602.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085346-74003.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085347-70957.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085347-28158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-32594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085347-54626.png)
②代入①得
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085347-40837.png)
化简,得
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085348-18340.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085348-52243.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085348-81473.png)
若
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085348-26629.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085349-31804.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-35014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085345-70170.png)
若
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085348-81473.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085349-86113.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-35014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085345-68701.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085345-84940.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-35014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085344-32594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085345-70170.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085345-68701.png)
【点评】导数
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085349-18207.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085349-39468.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085349-15410.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085339-72174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085340-41431.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085340-56239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085336-19194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085332-98330.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085328-66440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191019/20191019085325-58185.png)
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