[Maxima-bugs] [ maxima-Bugs-2882408 ] solve_rat_ineq returns false answers

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Bugs item #2882408, was opened at 2009-10-20 17:13
Message generated for change (Tracker Item Submitted) made by robertmarik
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Category: Share Libraries
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Robert Marik (robertmarik)
Assigned to: Nobody/Anonymous (nobody)
Summary: solve_rat_ineq returns false answers

Initial Comment:
Solve_rat_ineq gives bad answers for inequalities like x^2+x>0, x^2+x<=0, x^2-x<=0, x^2-x>0

The problem of the boundary of the leftmost (rightmost) interval is x=0, then the agoritms tests this point instead a point from inside of the interval. It seems that the change suggested in the attachment solves this probleem and does not introduce any new problem.

Thanks for fixing.

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https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2882408&group_id=4933