答案1
请尝试以下操作:
\documentclass{article}
\begin{document}
\begin{itemize}
\item first item followed with some equation
\[
\cos x = \sum_{n=0}^{\infty} \frac{(-1)^n x^{2n}}{(2n)!}
\]
\item next item next item next item next item next item next item next item next item next item next item next item next item
\end{itemize}
\end{document}