Symbolic Math Toolbox 5.1 (R2008b) and higher use the MuPAD symbolic engine by default.
You can use the Maple engine with Symbolic Math Toolbox in R2008b through R2009b releases. To do so, you must have a compatible version of Maple software, available from Maplesoft®, installed on your computer.
For more information on changing the symbolic engine, consult the following page in the documentation reached by the following MATLAB command:
Choose the engine by entering SYMENGINE at the MATLAB command line:
Note that the SYMENGINE function allows you to change the symbolic engine in R2008b through R2009b releases. As of Symbolic Math Toolbox 5.4 (R2010a), MuPAD is the only supported symengine as stated below:
<http://www.mathworks.com/help/symbolic/release-notes.html>
For more information on differences between MuPAD and Maple and other compatibility considerations, consult the release notes available at:
<http://www.mathworks.com/access/helpdesk/help/toolbox/symbolic/rn/brqy13y-1.html#brqy3xk>
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