Error: The first argument must be a scalar.
45 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I defined a matrix of variables like this
X=sym('X', [4,1])
%it looks like this
X=[X1 X2 X3 X4]'
Then the code did some stuff on X to give a vector d of the form
d=[1-X1; 1-X2; 1-X3; 1]
Now I need to differentiat the ith element of d wrt the ith element of X, in other words I want to do this
I tried this
E=gradient(d, [X(1) X(2) X(3) X(4)]);
It gave me an error "The first argument must be a scalar"
So what should I do now?
Thanks!
0 commentaires
Réponse acceptée
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Formula Manipulation and Simplification 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!