测试LaTeX
$$\LaTeX{}$$
$$\begin{aligned}\frac{\partial \pi}{\partial w} &\overset{!}{=}0\\
e &= e^{\min} \end{aligned}$$
测试LaTeX
$$\href{www.overleaf.com\/learn\/latex\/hyperlinks}{Hyperlink}$$
测试LaTeX
$$\begin{table}[]
\begin{tabular}{lllll}
h & e & l & l & o \\
w & o & r & l & d \\
1 & 2 & 3 & 4 & 5 \\
上 & 山 & 打 & 老 & 虎
\end{tabular}
\end{table}$$
