Comment #46 on issue 1598 by smichr: New polynomials manipulation module http://code.google.com/p/sympy/issues/detail?id=1598
Also, perhaps roots_cubic and roots_quartic should use the monic function rather than the monic method for reasons discussed in comment 41: ### >>> var('x');p=Poly(3*x**3+5*x**2+7*x+11) x >>> roots(p) Traceback (most recent call last): File "<interactive input>", line 1, in <module> File "C:\Documents and Settings\chris\sympy\sympy\polys\polyroots.py", line 417, in roots result = _try_decompose(f) File "C:\Documents and Settings\chris\sympy\sympy\polys\polyroots.py", line 337, in _try_decompose for r in _try_heuristics(h): File "C:\Documents and Settings\chris\sympy\sympy\polys\polyroots.py", line 380, in _try_heuristics result += roots_cubic(f) File "C:\Documents and Settings\chris\sympy\sympy\polys\polyroots.py", line 36, in roots_cubic one, a, b, c = f.monic().all_coeffs() File "C:\Documents and Settings\chris\sympy\sympy\polys\polytools.py", line 1053, in monic result = f.rep.monic() File "C:\Documents and Settings\chris\sympy\sympy\polys\polyclasses.py", line 1400, in monic return f.per(dmp_ground_monic(f.rep, f.lev, f.dom)) File "C:\Documents and Settings\chris\sympy\sympy\polys\densetools.py", line 1391, in dmp_ground_monic return dup_monic(f, K) File "C:\Documents and Settings\chris\sympy\sympy\polys\densetools.py", line 1385, in dup_monic return dup_quo_ground(f, lc, K) File "C:\Documents and Settings\chris\sympy\sympy\polys\densearith.py", line 143, in dup_quo_ground return [ K.quo(cf, c) for cf in f ] File "C:\Documents and Settings\chris\sympy\sympy\polys\algebratools.py", line 400, in quo raise ExactQuotientFailed('%s does not divide %s in %s' % (b, a, self)) ExactQuotientFailed: 3 does not divide 5 in ZZ -- You received this message because you are listed in the owner or CC fields of this issue, or because you starred this issue. You may adjust your issue notification preferences at: http://code.google.com/hosting/settings -- You received this message because you are subscribed to the Google Groups "sympy-issues" group. To post to this group, send email to sympy-iss...@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.