$\int\sin\left(x\right)\cdot\sin^3\left(\cos\left(x\right)\right)dx$

$0.7-2.893-0.24$

$\lim_{x\to\infty}\left(\frac{\cos\left(n\pi\right)}{2^n}\right)$

$\frac{\left(9-n^2\right)}{3-n^2}$

$\left(3x+3y+3z\right)^3$

$\int\frac{3}{4}e^{4x+6}dx$

$\frac{dx}{dy}=\frac{e^{x+y}}{e^{xy}}$