Thank You Post List (Complete)

[vafa]

کد: [انتخاب]

\documentclass{article}
\usepackage{amsmath}
\usepackage{xepersian}
\begin{document}
\[\sum_{\begin{subarray}{c}
i=j\\ j=3
\end{subarray}}^{10}3x\]
\end{document}