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Some mathematics: $a^2+b^2=c^2$

In WeBWorK: \(x^2+y^2=z_2\)

$\tan(x^2)$, $\alpha$, $\frac{2}{\beta}$, $a\neq b$, $A\subset B$, $A\not\subset B$

``double'' quotes, `single' quotes, a ligature, iff

\begin{bmatrix}
2 & 3 & 4\\
5 & 7 & 9
\end{bmatrix}

$\{1, 2, 3\}$, $1, 2, 3, \dots$


Structure:\newline
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\begin{center}
Assignment SLE-1\\
A Student\\
\today
\end{center}

\begin{itemize}  % enumerate
\item One.
\item Two.
\end{itemize}

\begin{align*}
A &= B & &\text{Theorem XYZ}\\
  &= C & &\text{Theorem XYZ}\\
  &= D & &\text{Theorem XYZ}
\end{align*}

\section{New Section}

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