Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 4011 by [email protected]: Solutions for cubics
http://code.google.com/p/sympy/issues/detail?id=4011
Say I have
y = -2*x**3 + 4*x**2 - 2*x + 5
solutions = solve(y)
print( [ask(Q.real(i)) for i in solutions] )
gives [False, False, False]
which is clearly not true as a cubic *always* has at least one real
solution.
Doing
print( [ask(Q.real( simplify(radsimp(i)) )) for i in solutions] )
gives a correct [False, True, False]
perhaps force a cubic to return simplified solutions like I wrote?
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