题目
题型:解答题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122951-54220.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122951-77187.png)
(Ⅰ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122951-54220.png)
(Ⅱ)在
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122951-45222.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122951-12269.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122952-54803.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122952-53889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122951-45222.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122952-46600.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122952-90819.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122952-46600.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122953-89542.png)
解析
(1)因为
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122953-89696.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122953-94292.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122953-10796.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122954-19843.png)
解:(Ⅰ)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122953-89696.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122953-94292.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122953-10796.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122954-68778.png)
解得
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122954-21957.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122954-30995.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122952-90819.png)
(Ⅱ)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122954-19843.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122954-63653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122955-51815.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122955-41269.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122955-23249.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122955-90636.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122956-33573.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122956-67973.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122953-89542.png)
核心考点
试题【已知(Ⅰ)求函数的单调递增区间;(Ⅱ)在中,分别是角A,B,C的对边,且,求的面积的最大值.】;主要考察你对正弦函数的图象与性质等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122625-90428.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122625-68776.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122625-34545.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122530-83080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122530-81834.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122530-61945.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122531-51568.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122531-32327.png)
(Ⅱ)在
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122531-72975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122531-17280.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122531-35406.png)
在△ABC中,内角A,B,C所对边长分别为
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122450-95896.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122451-51678.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122451-58401.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122451-36568.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122451-73406.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122452-46185.png)
(Ⅱ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122452-95436.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122245-50698.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122245-26812.png)
①
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122246-53717.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122246-53717.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122246-87121.png)
③
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122246-53717.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122246-84683.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122246-53717.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122246-32813.png)
以其中两个论断作为条件,另两个论断作为结论,写出你认为正确的一个命题(写成“
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122247-39410.png)
设函数
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122239-39566.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122239-23238.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122239-14593.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122240-52027.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122240-42051.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122240-88919.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190910/20190910122240-73940.png)
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