Comment #30 on issue 1620 by ronan.l...@gmail.com: Allow derivatives of unknown functions evaluated at a point
http://code.google.com/p/sympy/issues/detail?id=1620
I guess this happens because the Lambdas have a different hash: In [1]: Lambda(x, 2*x) == Lambda(x, 2*x) Out[1]: True In [2]: hash(Lambda(x, 2*x)) == hash(Lambda(x, 2*x)) Out[2]: False -- You received this message because you are subscribed to the Google Groups "sympy-issues" group. To post to this group, send email to sympy-issues@googlegroups.com. To unsubscribe from this group, send email to sympy-issues+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy-issues?hl=en.
