How do I access polylog in MATLAB R2013b?

Based on the documentation, there is a function, "polylog" that became available with MATLAB R2013b.

I installed R2013b, but I'm unable to access the polylog function.

>> polylog(1, 2)
Undefined function 'polylog' for input arguments of type 'double'.
>> which polylog
'polylog' not found.

What is curious is that I'm able to access other functions that are also in the Symbolic Math Toolbox (which polylog resides in).

>> which dirac
C:\Program Files\MATLAB\R2013b\toolbox\symbolic\symbolic\dirac.m
>> which zeta
C:\Program Files\MATLAB\R2013b\toolbox\symbolic\symbolic\@single\zeta.m  % single method

Any idea why I may not be able to access polylog?

Thanks!

Mark

Answer 1

[Walter Roberson]

You can only "which" for symbolic routines that also have a MATLAB interface. Symbolic routines that exist only in MuPAD cannot be found with which. Try

feval(symengine, 'polylog', 1, 2)

or

evalin(symengine, 'polylog(1, 2)')

Answer 2

[Mark]

Thanks a lot Walter. That's an excellent answer!