Status: Accepted
Owner: ----
Labels: Type-Defect Priority-Medium Solvers
New issue 2992 by krastano...@gmail.com: in solve: check=False produces
wrong answers
http://code.google.com/p/sympy/issues/detail?id=2992
I may have misunderstood the idea behind check=False. In this case just
mark as WontFix
What I think it should be:
solve(sin(x)/x) >> []
solve(sin(x)/x, check=False) >> [] # in master this wrongly gives [0]
solve(sin(x)/x - 1) >> [] # NotImplemented (ok)
solve(sin(x)/x - 1, check=False) >> [0] # NotImplemented (ok)
At the moment check=True produces correct answers (near the zero) if
expr=O(x)/O(1). check=False helps to find correct answers when
expr=O(x**p)/O(x**q) if p>q but produces incorrect answers if p<=q.
check also issue 2981
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