$\lim_{x\to\infty}\left(\frac{5^x-2}{5^x+3}\right)$

$27.73+8.006+15.075$

$\frac{dy}{dx}=\left(1+y^2\right)\left(x+1\right)$

$\lim_{x\to2}\left(\frac{x^2+3x+2}{x^2-1}\right)$

$16y^2+24y+4$

$\int\:\frac{x^2-3}{\left(x^2+1\right)^2}dx$

$y\:ln\left(x\right)ln\left(y\right)dx+dy=0$