Comment #1 on issue 1382 by zorg724: Documentation Error in "Finding all
roots of a polynomial"
http://code.google.com/p/sympy/issues/detail?id=1382
>>> import mpmath
>>> mpmath.__version__
'0.10'
>> help(mpmath.polyroots)
Help on function polyroots in module mpmath.calculus:
polyroots(coeffs, maxsteps=50, cleanup=True, extraprec=10, error=False)
Numerically locate all (complex) roots of a polynomial using the
Durand-Kerner method.
...
These are the roots of x^3 - x^2 - 14*x + 24 and 4x^2 + 3x + 2:
>>> nprint(polyroots([1,-1,-14,24]), 4)
[-4.0, 2.0, 3.0]
>>> nprint(polyroots([4,3,2], error=True))
([(-0.375 - 0.599479j), (-0.375 + 0.599479j)], 2.22045e-16)
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