Solving Integrals with Matlab
3 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi everyone, i am working on a calculus problem that requires me to use Lobatto Quadrature and Global Adaptive Quadrature but i keep getting an error. Could someone explain how to write a code for this? Thanks.
Problem: f(x)=integral sign(3x^2)dx. Upper bound is 8 and lower bound is 0 on the integral sign.
% Lobatto Quadrature
A3= quadl(@(3*x,x(1),x(end))
% Global adaptive quadrature
intfun=@(x) (3*x.^2)
A4=integral(Intfun,x(1),x(end))
0 commentaires
Réponses (1)
Star Strider
le 22 Avr 2019
There is an error in the anonymous function in ‘A3’, and since MATLAB is case-sensitive, ‘Intfun’ is not the same as ‘intfun’. Also note that the functions for ‘A3’ and ‘A4’ are different.
This runs:
% Lobatto Quadrature
A3= quadl(@(x)3*x,x(1),x(end))
% Global adaptive quadrature
intfun=@(x) (3*x.^2)
A4=integral(intfun,x(1),x(end))
(I provided my own ‘x’ vector to test it.)
0 commentaires
Voir également
Catégories
En savoir plus sur Numerical Integration and Differential Equations 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!