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nghianghialan
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lam thử các bạn ơi
[TEX]1) \int\limits_0^{\frac{\pi }{2}} {\ln \frac{{{{\left( {1 + \sin x} \right)}^{1 + \cos x}}}}{{1 + \cos x}}dx}[/tex]
[TEX]1) \int\limits_0^{\frac{\pi }{2}} {\ln \frac{{{{\left( {1 + \sin x} \right)}^{1 + \cos x}}}}{{1 + \cos x}}dx}[/tex]