Finding roots of symbolic polynomial on given interval

2 vues (au cours des 30 derniers jours)
Argento
Argento le 8 Avr 2016
Modifié(e) : Argento le 8 Avr 2016
Hello all, I am trying to find all the roots of a symbolic polynomial on the given interval [0, 1].
For my function, the plot shows 11 roots in the interval. I have been trying to no avail. This is what I have:
g(x) = 2097152*x^11 - 11534336*x^10 + 27394048*x^9 - 36765696*x^8 + 30638080*x^7 - 16400384*x^6 + 5637632*x^5 - 1208064*x^4 + 151008*x^3 - 9680*x^2 + 242*x - 1;
Ideally, I would need to put these roots in a vector. Thanks for the guidance.

Réponse acceptée

Azzi Abdelmalek
Azzi Abdelmalek le 8 Avr 2016
Modifié(e) : Azzi Abdelmalek le 8 Avr 2016
syms x
g = 2097152*x^11 - 11534336*x^10 + 27394048*x^9 - 36765696*x^8 + 30638080*x^7 - 16400384*x^6 + 5637632*x^5 - 1208064*x^4 + 151008*x^3 - 9680*x^2 + 242*x - 1
c=sym2poly(g)
r=roots(c)
  1 commentaire
Argento
Argento le 8 Avr 2016
Modifié(e) : Argento le 8 Avr 2016
Thank you Azzi, just seconds before your answer I also found the following method:
vpa(solve(g(x), x))
Many thanks!

Connectez-vous pour commenter.

Plus de réponses (0)

Catégories

En savoir plus sur Symbolic Math Toolbox dans Help Center et File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by