$\int_a^b f(x)dx$
$\frac{\partial f}{\partial x}$
$\sum_{i=1}^{n}$
$\lim_{x \to \infty}$
$\pi r^2$
$\sqrt{x^2 + y^2}$
$\Delta = b^2-4ac$
$\infty$
$e^{i\pi} + 1 = 0$
$\iiint_V f(x,y,z)$
$\nabla \cdot \vec{F}$
$\frac{d^2y}{dx^2}$
$\oint_C \vec{F} \cdot d\vec{r}$
$f(x) = ax^2 + bx + c$
$\theta$
$\frac{\partial^2 u}{\partial t^2}$
