$\frac{d}{dx}x^{\frac{8}{x}}$

$\frac{dy}{dx}=\frac{4x^3}{\cos y}$

$\frac{\left(x-3\right)^2}{\left(5x+15\right)}$

$\frac{2622\cdot0.0164}{1-\left(1+0.0164\right)^{-60}}$

$\lim_{x\to0}\left(\frac{tan\left(x\right)}{x+x^2}\right)$

$0.04\left(p-2\right)-0.05p=0.16$

$\int\:\frac{e^{\sqrt[4]{t}}}{\sqrt{t}}dx$