题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044304-51850.png)
![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044307-94181.png)
(2)根据(1)的结果,若函数
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044307-95974.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044307-92901.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044307-30275.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044308-43407.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044308-48584.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044307-94181.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044308-95807.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044308-83645.png)
由
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044309-66062.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044309-58690.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044309-22494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044309-86382.png)
令
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044309-47118.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044310-69079.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044310-67523.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044310-96119.png)
(2)∵函数
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044310-45034.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044307-92901.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044311-36721.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044311-47969.png)
令
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044311-57821.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044311-68005.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044312-34061.png)
如图,
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044312-88731.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044312-61590.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044312-87403.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044313-13207.png)
∴方程
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044308-43407.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044307-30275.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044313-47575.png)
即实数
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044308-48584.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044313-24596.png)
解析
核心考点
试题【已知函数的一系列对应值如下表:(1)根据表格提供的数据求函数的一个解析式;(2)根据(1)的结果,若函数周期为,当时,方程恰有两个不同的解,求实数的取值范围.】;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/20190911/20190911044256-18784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044256-16907.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044256-33921.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044257-71199.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044257-33388.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044257-56537.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044257-33388.png)
(2)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044257-33388.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044257-75988.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044258-76593.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044250-46845.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044251-94865.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044251-44253.png)
( )
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044245-17945.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044245-59656.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044245-17407.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044246-83263.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044239-31487.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044239-10042.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044240-89320.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044234-27328.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044234-52704.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044235-76970.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044235-96581.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911044235-58119.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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