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\renewcommand{\today}{Wednesday, September 11, 2000}

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\begin{hwsection}{2.1}{Matrix Operations}
  {1, 2, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 23, 24, 25, 26, 27, 28}
  {2, 8, 10, 12, 14, 16, 24, 26, 28}
\end{hwsection}

 
\begin{hwsection}{2.2}{Inverse of a Matrix} 
  {1-6, 9, 10, 11, 12, 13, 14, 17, 18, 21, 22, 23, 25, 26, 27, 28, 31,
    32} {2, 4, 6, 10, 12, 14, 18, 22, 28, 32}
\end{hwsection}

\begin{hwsection}{2.3}{Characterizing invertible matrices}  
    {1-8, 13, 14, 15, 16, 18, 19, 21, 22, 27, 28, 29, 30, 31,
      32,33,34} {2, 4, 6, 8, 14, 16, 18, 22, 28, 30, 32, 34}
\end{hwsection}


\begin{hwsection}{3.1}{Introduction to determinants}  
    {1-4, 9, 10, 19-22, 25-28, 33, 34, 39, 40} {2, 4, 10, 20, 22, 26,
      28, 34, 40}
\end{hwsection}


\begin{hwsection}{3.2}{Properties of determinants}  
  {1-4, 5, 6, 11, 12, 15-18, 24, 25, 27, 28, 35, 36} {2, 4, 6, 12, 16,
    18, 24, 28, 36}
\end{hwsection}

\begin{hwsection}{3.3}{Cramer's Rule, volume and linear transformations}
  {1-4, 19,20, 25-28} {2,4,20,26,28}
\end{hwsection}

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