题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030127-23491.png)
(Ⅰ)当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030127-83148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030127-20174.png)
(Ⅱ)若在区间
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030127-25079.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030128-90335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030128-19487.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030128-46448.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030128-32166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030129-30238.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030129-31322.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030129-18987.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030129-95410.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030130-61195.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030130-62677.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030130-21367.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030128-90335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030127-20174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030130-79346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030130-47769.png)
(Ⅱ)令
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030131-43688.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030131-73186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030131-29542.png)
在
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030127-25079.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030128-90335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030131-59108.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030132-31491.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030127-25079.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030132-86567.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030132-55874.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030132-28482.png)
①若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030132-97531.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030133-81839.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030133-43790.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030133-18005.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030133-78131.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030134-14276.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030134-31496.png)
此时
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030131-73186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030134-14276.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030134-61279.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030134-24451.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030135-46575.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030131-73186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030127-25079.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030135-51614.png)
②若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030135-33939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030135-83023.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030127-25079.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030135-73781.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030131-73186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030127-25079.png)
要使
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030131-73186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030136-54177.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030136-14346.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030128-46448.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030136-82768.png)
综合①②可知,当
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030129-31322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030128-90335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030131-59108.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030113-48397.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030113-31981.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030113-38032.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030114-97422.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030114-79925.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030114-18106.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030114-17428.png)
①求
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030113-38032.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030115-92543.png)
②求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030115-77085.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030102-97511.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030102-45992.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030102-36324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030102-97372.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030102-96163.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030103-16742.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030102-97372.png)
(3)若存在
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030103-17489.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030103-45328.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030103-56132.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030103-24501.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030048-21016.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030048-87283.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030048-72538.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030048-36939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030049-82415.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030049-47284.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030049-68666.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030049-54965.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030049-28878.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030048-36939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030049-16834.png)
(Ⅱ)已知函数 (
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030049-30857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030050-11811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030050-76632.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030050-85077.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030049-30857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030033-34020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030033-56777.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030033-44407.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030033-52847.png)
(Ⅱ)若存在区间
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030033-55798.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030033-52847.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030034-96861.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030033-55798.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030034-59366.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030020-59378.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030020-59786.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030020-26387.png)
(Ⅰ)若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030020-11019.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030020-59786.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030020-83874.png)
(Ⅱ)判断曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030021-21504.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030021-18994.png)
(Ⅲ)设
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030021-52904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030021-10376.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018030022-74161.png)
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