how would i type in my fraction in the polynomial to find my real and complex roots
3 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
adriana resendez
le 6 Mar 2015
Réponse apportée : Star Strider
le 6 Mar 2015
fx = x^5-((x^4)/2)-2x^3-x^2-3
roots = fx
0 commentaires
Réponse acceptée
Star Strider
le 6 Mar 2015
I expanded your function in the Symbolic Math Toolbox, and got the coefficient vector:
cfx = [1 -0.5 -2 -1 0 -3];
fxroots = roots(cfx)
produces:
fxroots =
1.9710e+000 + i
-1.1131e+000 +654.8187e-003i
-1.1131e+000 -654.8187e-003i
377.6052e-003 +877.5463e-003i
377.6052e-003 -877.5463e-003i
Note that the first root is real. It should be simply 1.9710, but since the others are complex, it is listed with a complex part for consistency. You could do all of this in the Symbolic Math Toolbox of course, but since you didn’t mention that you have access to it, I do not assume you do.
0 commentaires
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Assumptions 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!