$\lim_{x\to0}\ln\left(\frac{1+5x}{x}\right)$

$-\left(5+8-17\right)$

$\lim_{x\to0}\left(\frac{sin\left(2t\right)}{2}\right)$

$cos^{-1}\left(cos\left(x^2\right)\right)$

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

$\frac{2x-2}{x-1}$

$\int arc\:csc\frac{t}{2}dt$