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Câu 15:

Cho hàm số $f\left( x \right)=\sin 3x$

Câu 15: Cho hàm số f(x)=sin⁡3xf\left( x \right)=\sin 3xf(x)=sin3x. Trong các khẳng định sau, khẳng định nào đúng?

Thông tin câu hỏi

Câu 15:

Cho hàm số $f\left( x \right)=\sin 3x$ . Trong các khẳng định sau, khẳng định nào đúng?