\input epsf
\nopagenumbers
\magnification=\magstep1

\noindent {\bf Problem statement} a) Graph $f(x)=x^3-x$ in the
interval $-1\le x\le 2$. Compute $\int_{-1}^2 f(x)\,dx\,$.

\medskip

\noindent b) Graph $g(x)=\left|x^3-x\right|$ in the
interval $-1\le x\le 2$. Compute $\int_{-1}^2 g(x)\,dx\,$.

\medskip

\noindent b) Graph $h(x)=x^3-|x|$ in the
interval $-1\le x\le 2$. Compute $\int_{-1}^2 h(x)\,dx\,$.

\vfil\eject\end