$\int_i^{\infty}\left(2\pi\left(2\pi-x\right)\sin\left(x\right)\right)dx$

$x^2+\frac{3}{2}x$

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

$24\left(m+1\right)-18\left(m-5\right)\left(m+1\right)$

$-23\cdot4$

$\lim_{x\to\infty}\left(\frac{e^{-x}}{ln\left(1+4e^{-x}\right)}\right)$

$\frac{dy}{dx}=\frac{2xy}{-\left(y^2-y\right)}$