\documentclass[a4paper]{article}
\usepackage{verbatim}
\usepackage{probsoln}
\usepackage{graphicx}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{epstopdf}
\usepackage{enumerate}
\usepackage{amsthm}
\usepackage{amsfonts}
\usepackage{alltt}
\usepackage{listings}
\usepackage{color}
\newcommand{\proglang}[1]{\texttt{#1}}
\showanswers
\newboolean{eachProblemInOnePage}
\setboolean{eachProblemInOnePage}{false}
\newboolean{identifyAuthor}
\setboolean{identifyAuthor}{true}
\begin{document}
\newproblem{identifier}{ % An identifier for the problem. Change it also at \useproblem
% Problem identification
\begin{large}
\hspace{\fill}\newline
\textbf{My mega amazing problem!} % A title for the problem
\end{large}
\\
\ifthenelse{\boolean{identifyAuthor}}{\textit{Author Name} \\}{}
% Problem statement
Find the solution of the ODE
$$y'= 3$$
that fulfills $y(0) = 1$.
% End the problem statement with a blank line
}{
% Solution
Generic solution is:
$$
y = 3x + C.
$$
Solution to the initial value problem is:
$$
y = 3x + 1.
$$
You can also solve the problem with \proglang{MatLab}:
\lstinputlisting{script.m}
This is shown on the next figure:
\begin{figure}[ht!]
\centering
\includegraphics[width=0.7\textwidth]{graphic.pdf}
\end{figure}
}
\useproblem{identifier} % same identifier used at the definition of newproblem
\ifthenelse{\boolean{eachProblemInOnePage}}{\newpage}{}
\end{document}
