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

$\sqrt{3}\tan x+3=0$

$\frac{\sec^2\left(x\right)}{\cot^2\left(x\right)+1}$

$\frac{1}{6}\left(60-\left(45-f\right)\right)^2$

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

$\int\frac{4}{\left(\sqrt{16+x^2}\right).x^2}dx$

$\left(-12\right)\left(-5\right)-2$