题干

已知函数f(x)=3sin(2x+ π
3
)的图象为C,关于函数f(x)及其图象的判断如下:

①图象C关于点(

π
3
,0)对称;

②图象C关于直线x=

11π12
对称;

③由图象C向右平移

π
6
个单位长度可以得到y=3sin2x的图象;

④函数f(x)在区间(﹣

π
6
π
5
6
)内是减函数;

⑤函数|f(x)+1|的最小正周期为

π
2

其中正确的结论序号是____.(把你认为正确的结论序号都填上)

上一题 下一题 0.0难度 选择题 更新时间:2015-12-02 06:16:51

答案(点此获取答案解析)

①③

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