$\frac{d}{dx}y=x^{\frac{2}{3}}+4$

$\frac{d^2}{dx^2}\left(2+3x\right)^3$

$\left|-205\right|$

$\left(x\:+\:2\right)\left(x\:+\:6\right)\:-\left(x+4\right)\:^2+\:x$

$\int\sin\left(4x+1\right)dx$

$\int\cos\left(2x^2-x\right)\left(4x-1\right)dx$

$\lim_{x\to\infty}\left(\frac{2x+5}{4x^2-25}\right)$