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\centerline{{\it Class 9}: {\bf Wednesday September 23}}

\begin{description}
\item[SUMMARY] Learning to use \Matlab Interctively
\vspace*{-12pt}
\item[CURRENT READING] Recktenwald, Chapter 2 
\end{description}

{\large\bf Introduction to \matlab}\\
\matlab is an interactive numerical computing environment. It allows both command-line instructions, and programs, which are placed in files ending with {\tt .m}.\\

Today we will try running \matlab and executing some basic operations. For the rest of the course, we will be using \matlab as the environment in which we execute the numerical algorithms we will be studying. We will also use it as a tool which implements these algorithms to solve real-world, applied mathematics problems.\\

{\large\bf Numerical Methods with \Matlab}\\
I have given you copies of Chapter 2 of Gerald Recktenwald's {\it Numerical Methods with \Matlab: Implementations and Applications}. We will be using this unpublished text, along with the accompanying Numerical Methods with Matlab (NMM) Toolbox, during the course.


{\bf \Matlab Help}\\
You can use the command {\large {\tt help} {\it command}} to get information on the command {\it command}. \matlab is {\bf not case-sensitive}.\\

You can use the command {\large {\tt lookfor} {\it string}} to search the list of \matlab commands for occurrences of the word {\it string}.

{\bf \Matlab Skills}\\
We want to be able to do a number of things using \Matlab by the end of today's class.
\begin{itemize}
\item Use \matlab as a calculator
\item Use built-in functions and variables (e.g. {\tt sin()} and {\tt pi})
\item Define and use  user-defined \Matlab variables
\item Use the semi-colon to suppress output
\item Use the comma to type more than one command per line
\item Create vectors and matrices
\item Apply mathematical operations to  vector and matrices
\item Use Matrix subscript notation (i.e. {\tt M(1,2)} )
\item Use the {\tt linspace} and {\tt logspace} operators
\item Use the {\bf Transpose} operator {\tt ' }
\item Use the colon operator {\tt : }
\item Able to plot functions, with labels, titles, and added text
\end{itemize}
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