$x^2+2x-35\ge0$

$\sec\left(x\right)\left(\frac{sen\:x}{tan\:x}\right)$

$\int\left(\frac{3x}{2y}\right)dy$

$-5-3^2+4-3-2$

$\left(x^{2}y-2xy^{2}\right)dx-\left(x^{3}-3x^{2}y\right)dy=0$

$\frac{2n\left(2n+1\right)}{\left(2n+2\right)}$

$\:x\frac{dy}{dx}\:+\:xy\:=\:x^2y^4$