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hoangtkoa


[TEX] 1/\ \ \ \int_{\frac{1}{3}}^1 \frac{\sqrt{x-x^2}}{x^3}dx\ \ \ Ole[/TEX]
[TEX]2/\ \ \ \int_0^{\frac{\pi}{2}}ln(1+sinx)^{sinx}dx= -\int_0^{\frac{\pi}{2}}ln(1+sinx)d(cosx)\ \ \ \ tung\ \ \ phan[/TEX]
[TEX]2/\ \ \ \int_0^{\frac{\pi}{2}}ln(1+sinx)^{sinx}dx= -\int_0^{\frac{\pi}{2}}ln(1+sinx)d(cosx)\ \ \ \ tung\ \ \ phan[/TEX]
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