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

$\frac{dy}{dx}=\left(\frac{\left(x-\pi\right)}{y}\right)$

$\frac{dy}{dx}=\frac{\left(xy^4\right)}{\left(y^2+2\right)e^{-3x}}$

$\int_{\frac{\pi}{2}}^{\frac{3\pi}{2}}\left(\frac{sen\left(x\right)}{x}\right)dx$

$\int\cos\left(x-\frac{\pi}{2}\right)dx$

$\sqrt[2]{4}-\sqrt{-5}+\sqrt[3]{-1}$

$13x-11x-2x+2x-x+1=14$