$\int_0^{\frac{\pi}{4}}\left(tan^4\left(x\right)sec\left(x\right)\right)dx$

$\int\frac{12}{e^{2x}+16}dx$

$\frac{dy}{dx}\left(y=\cos\left(\sqrt{4x+12}\right)\right)$

$2-2\cdot4+5\cdot4$

$12-\left[8-2-\left(5-7\right)-3+0\right]-2$

$y'\:=\frac{-x}{y-2x}$

$\int\frac{20}{\left(s^2+6s+144\right)}dx$