$\lim_{x\to\infty}\left(1+\frac{4}{x}\right)^{\frac{x}{3}}\cdot$

$2x^2+3x-14$

$2x\:\left(3x+5\right)$

$\int_0^{\infty}\left(\frac{sin\left(x\right)}{e^x}\right)dx$

$\int x^{10}\cdot e^{4x}dx$

$\int e^{-b^2}db$

$4sin^2\left(x\right)csc\left(x\right)-4sin^2\left(x\right)$