Updates:
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Comment #8 on issue 1468 by smichr: problems with quartic root solver
http://code.google.com/p/sympy/issues/detail?id=1468
As I had added many more tests (and these don't apparently test anything
special in
the quartic routine) I left them out. I don't understand how patch files
are applied
very well so I don't know if I put those two tests in the current repo if
that patch
will apply to the version obtained after applying the above patch or vice
versa...so
I am just pasting the two lines here which have been tested and can go
immediately
after the quartic tests in polys\tests\test_polynomial.py:
assert sorted(roots_quartic(Poly(x**4 + x**3, x))) == [-1, 0, 0, 0]
assert sorted(roots_quartic(Poly(x**4 - x**3, x))) == [0, 0, 0, 1]
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