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#1 Posted : 15 November 2010 21:36:38(UTC)
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Found this unfortunate behavior in polyroots:


v := [-1 1 0 0 0]


polyroots(v) =
index out of bounds


the 4th order polynomial degenerates to a first order with single real root x=1. Polyroots couldn't figure that out. Should it not analyze the coefficient vector to determine correct polynomial order and then proceed to find the roots?

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