A long string used during the initial installation to unlock the files from the disc or download. Activation Key: The 25-digit code used installation to generate a license.dat file unique to that machine's hardware ID. Legacy and Utility Today, the "useful story" for R2009b is one of backward compatibility
If you're looking for information on how to activate MATLAB R2009b, I recommend the following: Matlab R2009b Activation Key
R2009b was a milestone release. It was the first version to fully support and introduced significant updates to the Symbolic Math Toolbox Compatibility Note: A long string used during the initial installation
Navigate to the "Install and Activate" tab for your specific MATLAB license. Matlab R2009b Activation Key