\documentclass[12pt]{jsarticle}
\usepackage{amsmath,amssymb}
\pagestyle{empty}
\begin{document}
\setlength{\baselineskip}{22pt}
\begin{flushleft}
{\huge 2}
　定積分$\displaystyle \int_{-1}^1 \left| x^2-\frac{1}{2}x-\frac{1}{2}  \right| dx$を求めよ．
\end{flushleft}
\end{document}
