The procedures for obtaining a license, downloading and installing MatLab are described at http://www.bilkent.edu.tr/matlab/student.html
MATLAB is a high-level language and interactive environment for numerical computation, visualization, and programming. Using MATLAB, you can analyze data, develop algorithms, and create models and applications. The language, tools, and built-in math functions enable you to explore multiple approaches and reach a solution faster than with spreadsheets or traditional programming languages, such as C/C++ or Java™.
More information is available at http://www.mathworks.com/products/matlab/