题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014939-45806.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014939-51375.png)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014939-23855.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014940-43848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014940-22120.png)
(3)设
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014940-63074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014940-36646.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014941-79934.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014941-81127.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014941-79934.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014941-99551.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014941-81127.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014941-45879.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014941-49287.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014942-63469.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014942-16676.png)
解析
试题分析:(1)先求
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014942-18627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014942-18627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014942-54854.png)
极值;(2)构造函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014943-33649.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014943-83682.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014943-17907.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014943-54366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014943-92532.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014940-63074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014940-36646.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014944-41723.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014944-35345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014941-45879.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014944-37677.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014944-86619.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014944-94429.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014945-33401.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014945-54941.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014945-38076.png)
试题解析:(1)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014942-18627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014944-35345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014945-80919.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014946-84384.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014946-73883.png)
(2)令
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014943-33649.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014943-83682.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014946-32295.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014943-17907.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014946-98239.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014946-17731.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014947-44415.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014947-61314.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014947-61314.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014947-44378.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014947-24350.png)
故
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014948-42441.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014948-43929.png)
(3)由
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014948-60229.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014948-81729.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014948-97398.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014949-66906.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014941-79934.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014941-81127.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014949-90356.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014944-35345.png)
即:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014949-52253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014949-90555.png)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014950-74039.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014944-86619.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014950-60161.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014945-54941.png)
设
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014950-44922.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014950-66571.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014950-91885.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014941-49287.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014926-83398.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014927-51942.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014927-43828.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014914-78104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014914-49252.png)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014914-91858.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014914-39897.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014915-56759.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014915-98473.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014915-14558.png)
求实数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014915-90776.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014904-74742.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014905-87480.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014905-64081.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014905-87480.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014905-87480.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014905-41935.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014905-69755.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014838-92945.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014838-82839.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014838-93707.png)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014839-31052.png)
(2)若关于
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014839-68118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014839-84558.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014844-79641.png)
(3)数列
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014845-86593.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014845-22657.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014845-92476.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014845-32182.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014830-60917.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014831-67408.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014831-55193.png)
(1)若x=3是
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014831-41740.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014831-41740.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014831-77014.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014831-31550.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018014832-85208.png)
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