How to plot graph of Simpson's rule and Trapezoidal rule between error and n?
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi there,
I have written 2 programs of Simpson's rule and Trapezoidal rule to compute the integral of a function f. Now I would like to plot graphs of both rules between the errors and n but I don't know how to do it. Could anyone help me with this problem please?
Here is the code of my program:
a=0.1;
b=0.2;
n=30;
x=linspace(a,b,n);
h=(b-a)/n;
f=inline('x.^4-x.*5+1');
y=x.^4-x.*5+1;
H=h*ones(1,n); %trapezoid
H([1,n])=h/2;
tr=sum (H.*f(x));
tr
H(1:2:n)=2*h/3; %simpson
H(2:2:n)=4*h/3;
H([1,n])=h/3;
simp=sum(H.*f(x));
simp
Thank you in advance!
0 commentaires
Réponses (2)
Alan Stevens
le 13 Déc 2020
If you use cumsum instead of just sum then you can plot tr and simp against x.
0 commentaires
Voir également
Catégories
En savoir plus sur JSON Format 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!