题目
题型:单选题难度:简单来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901203026-47326.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901203026-85184.png)
A.最小正周期为![]() | B.最小正周期为![]() |
C.最小正周期为![]() | D.最小正周期为![]() |
答案
解析
试题分析:因为
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901203036-33529.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901203026-85184.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901203027-26538.png)
核心考点
试题【函数,则函数是( )A.最小正周期为的奇函数B.最小正周期为的偶函数C.最小正周期为的奇函数D.最小正周期为的偶函数】;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
时刻 | 0:00 | 3:00 | 6:00 | 9:00 | 12:00 | 15:00 | 18:00 | 21:00 | 24:00 |
水深 | 5.0 | 7.5 | 5.0 | 2.5 | 5.0 | 7.5 | 5.0 | 2.5 | 5.0 |
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901203007-73035.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901203007-25978.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202931-37950.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202931-38134.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202931-58952.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202942-47382.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202942-67518.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202931-37950.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202942-35860.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202942-47382.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202943-76020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202943-36971.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202943-31844.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202944-24272.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202944-40418.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202944-93330.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202945-68331.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202945-34172.png)
(Ⅰ)求角
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202944-24272.png)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202945-56150.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202945-61309.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202946-66144.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202913-26424.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202913-13013.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202913-42963.png)
A.函数![]() | B.函数![]() |
C.函数![]() | D.函数![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202853-34258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202853-97476.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202853-93190.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202854-34268.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202854-39260.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202855-44763.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202855-11726.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202855-96271.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202855-64316.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202856-99069.png)
① 当a=4时,存在直线
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202855-96271.png)
② 若对于
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202856-51258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202855-96271.png)
③
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202856-60394.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202855-96271.png)
A.①② | B.①③ | C.②③ | D.①②③ |
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202834-88046.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190901/20190901202834-93100.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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