$\lim_{x\to8}\left(\frac{3+x}{x\left(x-8\right)}\right)$

$80e^{0.02\left(0.11\right)}$

$\int\left(\frac{y-3}{y^2}\right)dy$

$\left(1+\cos\theta\right)\left(\csc\theta-\cot\theta\right)$

$\int\frac{1}{8x^3+x}dx$

$\frac{d}{dx}4x\sqrt{11+0.5x}$

$l^{-1}\frac{s+3}{s^2+4}$