#1521 polyroots fails for polynomial

closed
nobody
5
2009-01-25
2008-11-06
Raymond Toy
No

p : -9.884265637156624e-4*x^6-7.775173079310833e-4*x^5+.001184627742112632*x^4
+8.939677571924619e-4*x^3-2.987139303801539e-4*x^2
-2.0237466230245725e-4*x+3.849560052117091e-6$

allroots(p);
[x = .01854325496743221,x = -.5131675095505001,x = -.8275260444151061,
x = .5668709689209485,x = .9185270984064534,x = -.9498689868123336]

polyroots(p,x);
[]

Don't know why, but polyroots fails to find any root of this polynomial. There's nothing really special about it that I can see, other than all the roots are real.

Discussion

  • Raymond Toy

    Raymond Toy - 2009-01-25

    polyroots has been superseded by bfallroots.

    Closing bug.

     
  • Raymond Toy

    Raymond Toy - 2009-01-25
    • status: open --> closed
     

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