MATLAB should always appear in all-caps. It should not appear as "Matlab". That's a standard that The MathWorks requests for books and articles on MATLAB. I started making the changes but it's a little tedious using the web editor.
Matrices can have an empty imaginary part; they aren't always complex. Also, MATLAB now supports alternative data types (int8, int16, int32, int64, single precision, and more). The default is double, even for integers, of course.
For A\b, you should make it clear that MATLAB doesn't compute the inverse, but factorizes A and solves the linear system Ax=b.
You should include something about MATLAB's colon notation, which is a powerful part of the language's syntax and one reason why it's so useful.
User 2 (Assistant Editor): License of alternatives
Greetings. My intention was just to point out that while GNU Octave and Sci-lab are both free-of-charge, their licenses are different (although there are plans to make scilab GPL compatible). My personal feeling is that the license specification is more interesting an issue then simply the cost. For example, I know a number of people who irregularly use MATLAB free-of-charge, making it equal to the other two in practice, while its licensing is radically different. My intention was just to bring the concerns of the developers of the cited programs. -- Nwerneck 02:53, 17 April 2008 (EDT)
User 3 (User:): Pylab
For the Similar software section: I think pylab is also a MATLAB alternative worth to mention. With the ipython interactive shell, it is a system with a lot of MATLAB-like functions (linspace, plot, title, subfigure, legend, fft), but with Python syntax.
The page of matplotlib. Its part is the pylab module.
-- Horvath 14:42, 27 January 2011 (CST)