$5x+\frac{1}{2}\ge\frac{23}{2}$

$\sqrt[4]{\frac{a^3\cdot b^5\cdot c}{\sqrt{a\cdot b^3\cdot c^3}}}$

$\frac{senx}{cosx}+\frac{cosx}{cotx}$

$\int\frac{x}{\left(x-3\right)^4}dx$

$\sen^{2}\left(-\theta\right)-\cos^{2}\left(-\theta\right)=1$

$\frac{dy}{dx}=2y\left(2-y\right)$

$\left(3d^4-7c^3\right)^2$