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Câu 8:

Nghiệm của trương trình $\sin 4x=2\cos 2x$

Câu 8: Nghiệm của trương trình sin⁡4x=2cos⁡2x\sin 4x=2\cos 2xsin4x=2cos2x là:

Thông tin câu hỏi

Câu 8:

Nghiệm của trương trình $\sin 4x=2\cos 2x$ là: