T
truyen223


[toán11] giúp mình giỏi toán hơn dc ko ?????
sinx +coxsin2x + [TEX]sqrt3[/TEX]cos3x = 2 ( cos4x + [TEX]sin^3 x[/TEX])
sinx +coxsin2x + [TEX]sqrt3[/TEX]cos3x = 2 ( cos4x + [TEX]sin^3 x[/TEX])
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