Matrix error in a simple integral
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hi guys
Can you please help what's wrong here?
clear all
clc
syms x y v L k
a=1/L-y/L^2;
b=y/L^2;
c=k/L-x/L^2;
d=(k-1)/L-x/L^2;
w=(1-v)/2;
A=[c^2*w+a^2,a*c*v+a*c*w;-c*d*w-a^2,-a*d*v-a*c*w,-c^2*w+a*b,c*b*w-a*c*v,c*d*w-a*b,a*d*v-c*b*w; a*c*v+a*c*w,a^2*w+c^2,-a*c*v-a*d*w,-a^2*w-c*d,c*b*v-a*c*w,a*b*w-c^2,a*d*w-c*b*v,-a*b*w+c*d; -c*d*w-a^2,-a*c*v-a*d*w,d^2*w+a^2,a*d*v+a*d*w,c*d*w-a*b,a*c*v-d*b*w,-d^2*w+a*b,d*b*w-a*d*v;-a*d*v-a*c*w,-a^2*w-c*d,a*d*v+a*d*w,a^2*w+d^2,a*c*w-d*b*v,-a*b*w+c*d,d*b*v-a*d*w,a*b*w-d^2;-c^2*w+a*b,c*b*v-a*c*w,c*d*w-a*b,a*c*w-d*b*v,c^2*w+b^2,-c*b*v-c*b*w,-c*d*w-b^2,c*b*w+d*b*v;c*b*w-a*c*v,a*b*w-c^2,a*c*v-d*b*w,-a*b*w+c*d,-c*b*v-c*b*w,b^2*w+c^2,c*b*v+d*b*w,-b^2*w-c*d;c*d*w-a*b,a*d*w-c*b*v,-d^2*w+a*b,d*b*v-a*d*w,-c*d*w-b^2,c*b*v+d*b*w,d^2*w+b^2,-d*b*v-d*b*w;a*d*v-c*b*w,-a*b*w+c*d,d*b*w-a*d*v,a*b*w-d^2,c*b*w+d*b*v,-b^2*w-c*d,-d*b*v-d*b*w,b^2*w+d^2];
X=int(A,x,0,L);
2 commentaires
Dyuman Joshi
le 18 Juin 2022
Your grouping of terms in A is incorrect to define it as a matrix.
Either you calculate the integral using int individually or define a proper matrix and integrate the whole matrix as one.
Réponses (0)
Voir également
Catégories
En savoir plus sur Creating and Concatenating Matrices 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!