Problem with writing this function
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I do not understand what is wrong with this function. When I try to run the function written like this the error down below comes up.
y = (x.-1)/((x.^2).+x)
0 commentaires
Réponse acceptée
Jon
le 9 Oct 2019
Modifié(e) : Jon
le 9 Oct 2019
You may have some other issues also, but assuming that you have defined x as a column or row vector and you are expecting to calculate y for each element of x you should use something like
y = (x -1)./(x.^2 + x)
Note that the . operator is needed to get element by element division as in ./ and element by element exponentiation as in x.^2
The . operator is not needed and in fact is not a recognized operation for addition and subtraction which is always performed element by element in MATLAB
0 commentaires
Plus de réponses (1)
Vikas Kumar
le 9 Oct 2019
Agree with Jon. I think you are getting error because of . operator you use with the addition and subtraction. This . operator is only meaningful when you want to do element by element operation, which in case of addition and subtraction is by default.
So:
y = (x-1)./((x.^2)+x)
1 commentaire
Jon
le 9 Oct 2019
Note also that parenthesis around exponentiation are not necessary either. They do not cause an error, but make the expression harder to read.
Voir également
Catégories
En savoir plus sur Whos 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!