S
sungryenhwa


Giải phương trình:
[TEX]\sqrt{2}[/TEX].cos5x - sin([tex]\pi[/tex] + 2x) = sin([tex]\frac{5\pi}{2}[/tex]+ 2x) .cot3x
[TEX]\sqrt{2}[/TEX].cos5x - sin([tex]\pi[/tex] + 2x) = sin([tex]\frac{5\pi}{2}[/tex]+ 2x) .cot3x
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