For a complete description of MATLAB, see
MATLAB User's Guide
published The MathWorks, Inc., the developers and distributors of MATLAB. This manual page just describes afew highlights.
When you're inside MATLAB, typing
to the MATLAB prompt `>>' will give a list of commands and functions. Typing help, followed by the name of one of the commands or functions will give a short description of that facility. Typing help, followed by the name of a directory will give synopses of all the commands and functions in that directory.
will give a menu of demonstrations.
To exit MATLAB type