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\begin{document}
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{\tiny Copyright 1996}
\vspace{-.2in}
\begin{center}
{\Large\bf A ROADMAP FOR SOLVING SECOND-ORDER ODE}
\end{center}
\begin{figure}[h]
\vspace{7.4in}
\begin{picture}(0,0)
\thicklines
\put(170,500){\framebox(120,40){\bf INTRODUCTION}}
\put(320,525){\vector(1,0){22}}
\put(370,500){\framebox(120,40){\bf EXAMPLES}}
\put(230,494){\vector(0,-1){18}}
\put(170,430){\framebox(120,40){\shortstack{\bf QUALITATIVE \\
\bf ANALYSIS \\ \bf (PHASE PLANE)}}}
\put(230,424){\vector(0,-1){18}}
\put(170,360){\framebox(120,40)
{\shortstack{\bf ODE SOLVABLE\\ \bf ANALYTICALLY?}}}
\put(350,350){{\bf NO}}
\put(370,280){\framebox(120,40){\shortstack{\bf NUMERICAL\\ \bf METHODS}}}
\put(320,350){\vector(1,-1){22}}
\put(100,350){{\bf YES}}
\put(150,350){\vector(-1,-1){22}}
\put(50,280){\framebox(120,30){\shortstack{\bf NONLINEAR \\
\bf $y''=f(t,y')$}}}
\put(50,240){\framebox(120,30){\shortstack{\bf NONLINEAR \\
\bf $y''=f(y,y')$}}}
\put(50,200){\framebox(120,30){\bf LINEAR}}
\put(180,220){\vector(1,0){20}}
\put(180,210){\vector(1,-1){20}}
\put(210,200){\framebox(120,30){\shortstack{\bf CONSTANT \\ \bf
COEFFICIENT}}}
\put(350,200){\framebox(120,30){\bf EULER-CAUCHY}}
\put(210,160){\framebox(120,30){\shortstack{\bf VARIATION OF \\
\bf PARAMETERS}}}
\put(350,160){\framebox(120,30){\shortstack{\bf UNDETERMINED\\
\bf COEFFICIENTS}}}
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\end{figure}
\vspace{-1.4in}
\hfill {\tiny SR}
\end{document}
