# How to get values out of a matrix equation, when one of its elements is an array?

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Zeyad Elsayed on 1 Jun 2019
Commented: Zeyad Elsayed on 5 Jun 2019
Hello everyone,
My question is how can I solve a matrix equation, when one of its elements is an array?
This error comes up in the command window preventing 'q' to be found. "Dimensions of arrays being concatenated are not consistent."
% Stating variables
omega = 100
M_22 = (0:0.1:20);
C_22 = (0:0.2:40);
F_1 = (0:0.4:80);
% Creating Matrix
M = [1 0; 0 M_22];
C = [1 2; -2 C_22];
K = [100 0; 0 100];
F = [F_1; F_2];
% Equations
Z = -(omega^2)*M + omega*j*C + K;
Z_inverse = inv(Z);
q = Z_inverse*F;
Zeyad Elsayed on 5 Jun 2019
Perfect it worked! Thanks Walter, I want to Accept your answer but for some reason I cant find how to do this. Probably because its submitted as a comment.

R2018b

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