Chưa có bài trả lời

[Niken]

1/

$\int_{0}^{\pi /2}\frac{sinx.cosx}{sin2x+cos2x}dx$

2/

$\int_{0}^{\pi /2}(\sqrt{cosx}+\sqrt{sinx})dx$

3/

$\int_{-\pi/4}^{\pi /4}\frac{sin^{6}x+cos^{6}x}{6^{x}+1}dx$