Skip to main content\(\newenvironment{mat}{\left[\begin{array}}{\end{array}\right]}
\newcommand{\colvec}[1]{\left[\begin{matrix}#1 \end{matrix}\right]}
\newcommand{\rowvec}[1]{[\begin{matrix} #1 \end{matrix}]}
\newcommand{\definiteintegral}[4]{\int_{#1}^{#2}\,#3\,d#4}
\newcommand{\indefiniteintegral}[2]{\int#1\,d#2}
\def\u{\underline}
\def\summ{\sum\limits}
\newcommand{\lt}{ < }
\newcommand{\gt}{ > }
\newcommand{\amp}{ & }
\)
