\documentclass[coloremph,colorhighlight,lightbackground]{bidipresentation}
\usepackage{amsmath,amssymb,amsfonts,hyperref}
\hypersetup{backref,pdfpagemode=FullScreen,colorlinks=true}
\usepackage{multirow}
\usepackage{ptext}
\usepackage{xepersian}
\settextfont{XB Roya}
\begin{document}
% ------------------------------------------------------ slide #0
\begin{rawslide}
   \tableofcontents
\end{rawslide}
% ------------------------------------------------------ slide #1
    \section{بخش}
\begin{rawslide}
\begin{description} 
\item[یک] 
\ptext[1]
\pause\item[دو] 
\ptext[1]
\pause\item[سه] 
\ptext[1]
\end{description}
\end{rawslide}
% ------------------------------------------------------ slide #2
   \section{ریاضی در جدول}
\begin{rawslide}
\begin{center}
\begin{tabular}{|l|r|l|l|} 
\hline
\multicolumn{1}{|c|}{تابع} & \multicolumn{1}{c}{توصیف} &
\multicolumn{1}{|c|}{نوع آرگومان} & \multicolumn{1}{c|}{نوع پاسخ} \\
\hline
\multirow{2}{*}{$ \abs(x) $} &\multirow{2}{*}{قدر مطلق مقدار $x$}   & Integer & Integer \\ 
 & & Real & Real \\ \hline
 \lr{$ \sqrt(x) $} & ریشه دوم $ x $ & Real & Real \\ \hline
 \end{tabular}
 \end{center}
\end{rawslide}
\end{document}