题目
题型:解答题难度:简单来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205746-81856.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205746-74072.gif)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205747-99384.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205747-65910.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205747-71554.gif)
函数解析式;
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205747-26773.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205748-61172.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205748-28217.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205748-91442.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205748-73134.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205748-89187.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205748-73134.gif)
(2)由
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205747-65910.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205748-61172.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205749-33065.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205749-90964.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205749-28061.gif)
即
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205749-51538.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205749-28061.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205746-74072.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205749-68396.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205750-97369.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205748-89187.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205750-55623.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205750-12518.gif)
此时
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205750-44233.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205750-66536.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205751-14445.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205751-12892.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205748-91442.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205751-31174.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205746-81856.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205751-78812.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205751-55195.gif)
此时
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205750-44233.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205750-66536.gif)
所以,
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205748-89187.gif)
核心考点
试题【已知函数().(1)当时,写出由的图象向右平移个单位长度得到的图象所对应的函数解析式;(2)若图象过点,且在区间上是增函数,求的值.】;主要考察你对任意角三角函数的概念等知识点的理解。[详细]
举一反三
在△ABC中,三内角A、B、C及其对边a、b、c,满足sin(A-B)=sinB+sinC.
(Ⅰ)求角A的大小;
(Ⅱ)若a=6,求△ABC面积的最大值.
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205724-61335.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205724-85551.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205724-37552.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205725-75409.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205725-54503.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205718-27053.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205719-76088.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205719-98317.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205719-41457.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205719-44629.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205719-59842.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205720-40319.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205628-89605.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205628-66197.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205628-63116.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205628-65042.gif)
(2)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205629-45283.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205540-34276.gif)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205541-28327.gif)
(2)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205541-28327.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205541-33252.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822205541-10258.gif)
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