levanvu12a1

$$\int_0^{\frac{\pi}{4}} ln(cosx)dx$$

$$\int_{\frac{\pi}{3}}^{\frac{\pi}{2}} {\frac{e^x}{sinx}}dx$$

$$\int_0^{\frac{\pi}{4}} (x^2tanx+ln(cosx))dx$$

GPT :$\sqrt{7x-8}+\sqrt{\frac{7-2x^2}{6}}=x$

MOD: Chú ý tiêu đề