Hello,
There is this block of code in the tutorial <http://docs.sympy.org/latest/tutorial/simplification.html>: >>> l = [] >>> frac = apart(frac, a0) >>> frac a₂⋅a₃⋅a₄ + a₂ + a₄ a₀ + ─────────────────────────────────────── a₁⋅a₂⋅a₃⋅a₄ + a₁⋅a₂ + a₁⋅a₄ + a₃⋅a₄ + 1 >>> l.append(a0) >>> frac = 1/(frac - a0) >>> frac a₁⋅a₂⋅a₃⋅a₄ + a₁⋅a₂ + a₁⋅a₄ + a₃⋅a₄ + 1 ─────────────────────────────────────── a₂⋅a₃⋅a₄ + a₂ + a₄ I've read the documentation on apart() and factor() but I still don't understand the purpose of putting a0 as the second argument to the call to apart(). Also, leaving out a0 produces a NotImplementedError: multivariate partial fraction decomposition error. and replacing a0 with other symbols like a1, a2, etc works fine. But I still don't understand what's going on. Please help. -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/ee25e1e8-ff3c-44a6-bf7d-5b0f14456fc4%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
