Why is there an error? Undefined function 'f' for input arguments of type 'double'.
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Ehi Eromosele
le 5 Mar 2014
Commenté : Image Analyst
le 5 Mar 2014
Error using arrayfun
Undefined function 'f' for input arguments of type 'double'.
Error in golden (line 3)
plot(t,arrayfun(@f,t));
function golden(a, b)
t=[a:0.01:b];
plot(t,arrayfun(@f,t));
hold on
tol=10^(-12);
r=(3-sqrt(5))/2;
c=a+r*(b-a);
d=b-r*(b-a);
fa=f(a);
fb=f(b);
fc=f(c);
fd=f(d);
while (b-a>tol)
if (fc<fd)
b=d;
fb=fd;
d=c;
fd=fc;
c=a+r*(b-a);
fc=f(c);
plot(c,fc,'r*');
else
a=c;
fa=fc;
c=d;
fc=fd;
d=b-r*(b-a);
fd=f(d);
plot(d,fd,'r*');
end
end
fprintf('Minimum found at x=%.12f \n', (a+b)/2, f(a+b)/2);
hold off
end
1 commentaire
Image Analyst
le 5 Mar 2014
http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup Don't double space. Just highlight then click {}Code. Don't click {}Code before highlighting either!
Réponse acceptée
Image Analyst
le 5 Mar 2014
Well, you did not define f, just like it said. What do you think f should be? You have to tell it!
2 commentaires
Image Analyst
le 5 Mar 2014
Look up "anonymous functions" then try it and see. That's the best way to learn.
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Logical dans Help Center et File Exchange
Produits
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!