Required Text: Linear Algebra with Applications (7th
/6th Edition)
Steven J. Leon
Hardcover, Prentice Hall, 2005
(either edition works, but the 7th ed. is the official text!)
MATLAB HELP (follow the links to "Documantation" and "MATLAB" to
get to the Matlab man pages at Mathworks).
An evolving collection of matrix related commands is found
here.