V
valdes


[tex]\int\limits_{\frac{3\pi}{2}}^{\frac{5\pi}{3}}\frac{cos2x}{cosx-\sqrt{3}sinx}dx[/tex]
[tex]\int\limits_{-1}^{1}\frac{1}{(e^x+1)(x^2+1)}dx[/tex]
[tex]\int\limits_{\frac{-\pi}{2}}^{\frac{\pi}{2}}\frac{x^2cosx}{e^x+1}dx[/tex]
[tex]\int\limits_{-1}^{1}\frac{1}{(e^x+1)(x^2+1)}dx[/tex]
[tex]\int\limits_{\frac{-\pi}{2}}^{\frac{\pi}{2}}\frac{x^2cosx}{e^x+1}dx[/tex]