\input epsf

\def\ni{\ \\ \noindent}
\def\eg{{\it e.g.}}
\def\etc{{\it etc.}}
\def\ie{{\it i.e.}}

\documentstyle{article}
\begin{document}
\setlength{\textheight}{8in}


 \bigskip
 \epsfxsize=6.0in
 \epsfysize=4.0in
 \centerline{\vbox{\epsfbox{cube2-2a.eps}}}
 \epsfxsize=0pt
 \epsfysize=0pt
\bigskip
{ {\bf Figure 2a.} The pictorial representation of
             $(x+h)^2-x^2$.}\\
 \bigskip

\pagebreak

 \bigskip
 \epsfxsize=6.0in
 \epsfysize=4.0in
 \centerline{\vbox{\epsfbox{cube2-2b.eps}}}
 \epsfxsize=0pt
 \epsfysize=0pt
\bigskip
{ {\bf Figure 2b.} The pictorial representation of
             $(x+h)^3-x^3$.}\\
 \bigskip

\pagebreak

 \bigskip
 \epsfxsize=6.0in
 \epsfysize=4.0in
 \centerline{\vbox{\epsfbox{cube2-3a.eps}}}
 \epsfxsize=0pt
 \epsfysize=0pt
\bigskip
{ {\bf Figure 3a.} The Riemann integral
$\displaystyle \int_0^x f(s)\ ds
=\lim_{\Delta s \rightarrow 0} \sum_i f(s_i) \Delta s$.}\\
 \bigskip

\pagebreak


 \bigskip
 \epsfxsize=6.0in
 \epsfysize=4.0in
 \centerline{\vbox{\epsfbox{cube2-3b.eps}}}
 \epsfxsize=0pt
 \epsfysize=0pt
\bigskip
{ {\bf Figure 3b.} The pictorial representation of
$0+1+2+3+4+5\approx\frac{1}{2} 6^2$.}\\
 \bigskip

\pagebreak


 \bigskip
 \epsfxsize=6.0in
 \epsfysize=4.0in
 \centerline{\vbox{\epsfbox{cube2-3c.eps}}}
 \epsfxsize=0pt
 \epsfysize=0pt
\bigskip
{ {\bf Figure 3c.} The pictorial representation of
$0^2+1^2+2^2+3^2+4^2+5^2\approx\frac{1}{3} 6^3$.}\\
 \bigskip


\end{document}
\end

