$y=\frac{1}{3}\ln\left(x^3+\sqrt{x^6-a^6}\right)$

$\frac{dy}{dx}=\sqrt{\frac{sen^2x}{\left(1+cos\:x\right)}}$

$45\int30\:\left(12cos\left(x\right)+4sec2\left(x\right)\right)dx$

$\frac{dy}{dx}x+x^2y-y^2-20=0$

$\frac{6^3\left(w\right)}{6^2}$

$2\left(x-y\right)^2\left(x+y\right)-2\left(x+y\right)^2\left(x-y\right)$

$\lim_{x\to\infty}\left(\frac{x-3}{x-3}\right)$