Calculate roots of equations
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi at all, (firtsly sorry for bad english, probably I'll use the wrong word).
I have a matrix in which I have memorized the coefficients of polynomials:
A=[2 2 ; 3 3 ; ... ... ...]
every row rapresents a polynomial:
A1 -> A(1,:) -> 2x + 2
A2 -> A(2,:) -> 3x + 3
An...
to resolve the equation A1=0
ax + b = 0
x= - (b/a)
I do:
xA1 = - ( A(:,1) / A(:,2) );
I do it for all n rows.
Computionally this way is too expensive;
My questions are:
1. there is a command that calculates the roots of a generic equation?
2. If that command exists, Can I apply it ( with a for-cycle ) to every equations ?
If I'm not clear, please ask me... thanks
0 commentaires
Réponse acceptée
Azzi Abdelmalek
le 17 Nov 2012
Modifié(e) : Azzi Abdelmalek
le 17 Nov 2012
use roots function
example
A=[1 2 1; 4 5 8; 8 9 7]
sol=cell2mat(arrayfun(@(x) roots(A(x,:)),(1:size(A,1)),'un',0))'
0 commentaires
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Polynomials 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!