\frametitle{2D Program: MATLAB Remarks - Dot Operations}
  \noindent
  When you replace a loop and a scalar assignment by a vector assignment,
  MATLAB will generally apply the operations to each element.
  \vskip 0.1in
  But certain operators are ambiguous, including *, /, and {\verb|^|}.
  If A, B and C are vectors or arrays, MATLAB interprets the statement
\begin{verbatim}
  A = B * C;
\end{verbatim}
  as a request for a dot product, matrix-vector multiplication, or matrix-matrix
  multiplication.  If, instead, you simply want an element by element multiplication,
  you must signal this by writing
\begin{verbatim}
  A = B .* C;
\end{verbatim}
  Similarly, use the ./ and .{\verb|^|} operators if you want
  the non-vector operators.  The dot operator is used
  extensively in the 2D program!