MathJax Cheat Sheet

$\underset{a}{\arg\min}$

$\overline{y}$

$$ |_{a}^b,\; \big|a^b,\; \bigg|{a}^b $$

$y = \left{ \begin{array}{l} first\ second \end{array} \right.$

$\begin{bmatrix} 1 & x & x^2 \ 1 & y & y^2 \ 1 & z & z^2 \ \end{bmatrix}$

$\left|\begin{array}{} \mathbf{i} & \mathbf{j} & \mathbf{k} \ a_1 & a_2 & a_3 \ b_1 & b_2 & b_3 \end{array}\right|$

$A \cap B=\varnothing$

$A \cup B=\Omega$

$\approx$

$\frac{\partial z}{\partial x}$

$\equiv$

$\Leftrightarrow$