$\lim_{x\to\infty}\left(\frac{4x+5}{5x^4+1}\right)$

$\arccos\left(-\frac{\sqrt{2}}{1}\right)$

$\int_2^{\infty}\left(\frac{1}{\sqrt[3]{x-2}}\right)dx$

$\frac{35vw^2}{25v^2w^2}$

$\int\left(x^3+5x^2-2\right)e^2dx$

$x^4-4x^3+21x^2$

$log\left(d+1\right)-logd=log\left(1+\frac{1}{d}\right)$