题目
题型:不详难度:来源:
已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155623-47158.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155623-92353.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155623-78417.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155624-66721.gif)
(I)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155624-45742.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155624-10365.gif)
(II)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155624-39260.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155625-54081.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155625-52346.gif)
答案
(II)方程
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155625-82046.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155625-78636.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155625-49112.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155626-19216.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155626-67992.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155626-10048.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155626-17328.jpg)
令
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155627-74401.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155627-88799.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155627-84370.gif)
① 若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155627-77287.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155628-29859.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155628-31981.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155628-72186.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155624-10365.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155628-15922.gif)
② 若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155629-99826.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155629-22148.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155628-31981.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155629-33833.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155624-10365.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155629-66675.gif)
③ 若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155629-76455.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155630-88292.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155630-82216.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155624-10365.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155630-23613.gif)
(2)方程
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155625-82046.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155631-80645.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155631-60634.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155631-80334.gif)
若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155631-26387.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155631-60999.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155625-82046.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155632-19595.gif)
满足不等式组的区域如图所示,条件(※)的面积为:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155632-70468.gif)
而条件
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155624-39260.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155625-54081.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155632-13346.gif)
所以,方程
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155625-82046.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155625-78636.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155531-94189.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155531-17537.gif)
(1)若存在
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155531-83942.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155532-35658.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155532-41829.gif)
(2)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155532-16333.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155157-53940.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155157-87604.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155157-40007.jpg)
A.![]() | B.![]() |
C.![]() | D.![]() |
设函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155012-72329.gif)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155012-22392.gif)
(2)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155012-71837.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155013-91327.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018155013-70678.gif)
设
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154921-85894.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154921-65921.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154921-69478.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154921-64313.gif)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154922-67806.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154922-45793.gif)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154922-72831.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154922-71599.gif)
(3)设函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154923-71025.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154923-60884.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154923-56034.gif)
求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154923-82202.gif)
已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154757-50223.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154758-39240.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154758-87474.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154758-45843.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154758-19134.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154759-45081.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154759-46446.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154759-51144.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154759-20590.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191018/20191018154800-17124.gif)
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