Updates:
Status: Accepted
Cc: mattpap
Labels: NeedsReview
Comment #3 on issue 1305 by fab...@fseoane.net: sympy.roots not working for
slightly more complicated polynomials
http://code.google.com/p/sympy/issues/detail?id=1305
could not reproduce the problem. Maybe this was solved with the merge of
mateusz'
ratint branch?
In [9]: sympy.roots(f2, x)
Out[9]:
{(-a*b*c - d*(1/d)**(1/2)*(1/(d**2 + b**2*d**2 -
2*b*d**2))**(1/2)*(-4*a**2*d**2*(d**2 + b**2*d**2 - 2*b*d**2) + 4*a*c*(d**2
+
b**2*d**2 - 2*b*d**2) + 4*a*b*c**2*(d**2 + b**2*d**2 - 2*b*d**2) +
4*b*a**2*d**3*(d**2 + b**2*d**2 - 2*b*d**2) - 4*a*b*c*d*(d**2 + b**2*d**2 -
2*b*d**2)
- 4*b*c*a**2*d**2*(d**2 + b**2*d**2 - 2*b*d**2) + d*a**2*b**2*c**2)**(1/2) +
b*d*(1/d)**(1/2)*(1/(d**2 + b**2*d**2 -
2*b*d**2))**(1/2)*(-4*a**2*d**2*(d**2 +
b**2*d**2 - 2*b*d**2) + 4*a*c*(d**2 + b**2*d**2 - 2*b*d**2) +
4*a*b*c**2*(d**2 +
b**2*d**2 - 2*b*d**2) + 4*b*a**2*d**3*(d**2 + b**2*d**2 - 2*b*d**2) -
4*a*b*c*d*(d**2
+ b**2*d**2 - 2*b*d**2) - 4*b*c*a**2*d**2*(d**2 + b**2*d**2 - 2*b*d**2) +
d*a**2*b**2*c**2)**(1/2))/(-2*a*d + 2*a*b*d - 2*a*b*c*d - 2*a*b**2*d**2 +
2*a*b*d**2
+ 2*a*c*d*b**2): 1,
(-a*b*c + d*(1/d)**(1/2)*(1/(d**2 + b**2*d**2 -
2*b*d**2))**(1/2)*(-4*a**2*d**2*(d**2 + b**2*d**2 - 2*b*d**2) + 4*a*c*(d**2
+
b**2*d**2 - 2*b*d**2) + 4*a*b*c**2*(d**2 + b**2*d**2 - 2*b*d**2) +
4*b*a**2*d**3*(d**2 + b**2*d**2 - 2*b*d**2) - 4*a*b*c*d*(d**2 + b**2*d**2 -
2*b*d**2)
- 4*b*c*a**2*d**2*(d**2 + b**2*d**2 - 2*b*d**2) + d*a**2*b**2*c**2)**(1/2) -
b*d*(1/d)**(1/2)*(1/(d**2 + b**2*d**2 -
2*b*d**2))**(1/2)*(-4*a**2*d**2*(d**2 +
b**2*d**2 - 2*b*d**2) + 4*a*c*(d**2 + b**2*d**2 - 2*b*d**2) +
4*a*b*c**2*(d**2 +
b**2*d**2 - 2*b*d**2) + 4*b*a**2*d**3*(d**2 + b**2*d**2 - 2*b*d**2) -
4*a*b*c*d*(d**2
+ b**2*d**2 - 2*b*d**2) - 4*b*c*a**2*d**2*(d**2 + b**2*d**2 - 2*b*d**2) +
d*a**2*b**2*c**2)**(1/2))/(-2*a*d + 2*a*b*d - 2*a*b*c*d - 2*a*b**2*d**2 +
2*a*b*d**2
+ 2*a*c*d*b**2): 1}
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