题目
题型:解答题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-85305.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-71213.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-16034.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-38171.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-71213.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-85305.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-33569.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-73365.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-61120.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-77167.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-85305.gif)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-85454.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-48864.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-85927.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-17175.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-61120.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-71213.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-11754.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-98914.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-97945.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-72332.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200913-48186.gif)
即
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200913-52324.gif)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-61120.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-17175.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200913-73300.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200913-86988.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200913-26432.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-85927.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200913-18217.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200913-77901.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200913-51364.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-61120.gif)
①当
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200913-54809.gif)
②假设当
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200913-65733.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200913-22228.gif)
则当
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200913-10268.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200913-82418.gif)
因为
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200913-22228.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200914-84318.gif)
故当
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200913-10268.gif)
由①②可知对于任意
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-16034.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200914-72776.gif)
综上,为了保证对任意
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-85927.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-17175.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200912-61120.gif)
解析
核心考点
试题【(本小题满分12分)自然状态下的鱼类是一种可再生的资源,为了持续利用这一资源,需从宏观上考察其再生能力及捕捞强度对鱼群总量的影响。用表示某鱼群在第年初的总量,,】;主要考察你对指数函数图象及性质等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200909-35251.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200909-80352.gif)
(Ⅰ)求函数在点(1,
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200909-22438.gif)
(Ⅱ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200909-83874.gif)
(Ⅲ)对于曲线上的不同两点
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200909-35225.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200909-31531.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200909-54575.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200909-69908.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200909-69385.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200909-72654.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200909-76878.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200909-60472.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200909-57925.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200910-79042.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200909-72654.gif)
A.b<a<c | B.c<a<b | C.a<b<c | D.b<c<a |
![](http://img.shitiku.com.cn/uploads/allimg/20190819/20190819200905-52863.png)
A.向左平移一个单位,再向上平移一个单位 |
B.向左平移一个单位,再向下平移一个单位 |
C.向右平移一个单位,再向上平移一个单位 |
D.向右平移一个单位,再向下平移一个单位 |
A.方程有两不相等的负实根 | B.方程有两个不相等的正实根 |
C.方程有一正实根,一零根 | D.方程有一负实根,一零根 |
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