题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-33957.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-68347.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-25869.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-25586.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-70883.png)
(Ⅰ)证明:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034910-98946.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034910-85031.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034910-17007.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034910-23306.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034911-82815.png)
解析
试题分析:(Ⅰ)函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-68347.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034911-95855.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034911-21633.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-25869.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-25586.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034911-76748.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034911-95404.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034912-80376.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034912-80420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034912-10019.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034912-80420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034910-98946.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034912-13415.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034912-15100.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034910-85031.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034913-13483.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-25869.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034910-98946.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034910-17007.png)
试题解析:(Ⅰ)∵ 函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-68347.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-25869.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-25586.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034913-56432.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-25869.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-25586.png)
∴方程
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034911-21633.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-25869.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034909-25586.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034913-25033.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034913-40242.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034913-24141.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034914-46922.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034914-87680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034914-45789.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034914-58236.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034914-87680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034914-87680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034915-94485.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034910-98946.png)
(Ⅱ)∵
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034915-33845.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034915-34831.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034912-15100.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034915-28442.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034915-92193.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034916-50700.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034916-44029.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034910-98946.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034916-63077.png)
∴ 当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034916-49647.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034916-29061.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034910-85031.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034917-70084.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034917-62953.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034910-85031.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034910-85031.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034917-11877.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034910-23306.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034911-82815.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034902-56286.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034902-77494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034851-95134.png)
(Ⅰ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034851-52559.png)
(Ⅱ)若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034851-72211.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034852-53397.png)
(Ⅲ)设
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034852-14677.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034852-95789.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034852-61437.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034838-75569.png)
(Ⅰ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034838-30501.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034839-92318.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034839-92318.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034839-50637.png)
(Ⅱ)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034839-92318.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034839-73395.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034839-12881.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034832-83198.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034832-26278.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034832-63663.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034832-83198.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034832-92265.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034832-23133.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034821-52009.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034821-29756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034821-26356.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034821-81218.png)
(2)讨论函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018034821-58515.png)
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