\problemdata       % Takes 5 *mandatory* arguments
  {simple-induction}       % latex-friendly label for the prob.
  {induction}              % The topic(s) of the problem content.
  {Rosen}                  % Source (if known)
  {S02 cp2W-1;}            % Usage (list ones you are aware of).
  {Nick Matsakis, S02}     % Last revision info (author, date).
%from S01 pracQ1
\begin{problem}
Prove by induction that
\[
\sum_{i=0}^{n} (2i+1)^2 = \frac{(n+1)(2n+1)(2n+3)}{3}
\]
\solution{See Rosen, solution to \S 3.2, Exercise 9.}

\end{problem}
