Status: Valid
Owner: ----
Labels: Type-Enhancement Priority-Medium

New issue 4033 by [email protected]: Add evaluation for polylog
http://code.google.com/p/sympy/issues/detail?id=4033

In [1]: polylog(2, Rational(1,2))
Out[1]: polylog(2, 1/2)

In [2]: polylog(2, Rational(1,2)).expand(func=True)
Out[2]: polylog(2, 1/2)

The answer should be -log(2)**2/2 + pi**2/12

In [11]: print(nsimplify(expand_func(polylog(2, Rational(1,2))).evalf(), [pi**2, log(2)**2]))
-log(2)**2/2 + pi**2/12


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