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Câu 7:

Giá trị lớn nhất M của hàm số $y = \sin x + \cos x$

Câu 7: Giá trị lớn nhất M của hàm số y=sin⁡x+cos⁡xy = \sin x + \cos xy=sinx+cosx là bao nhiêu?

Thông tin câu hỏi

Câu 7:

Giá trị lớn nhất M của hàm số $y = \sin x + \cos x$ là bao nhiêu?