MATLAB: How to obtain matrix components

matrixsolvesubs

Hi All,
I am new to Matlab, and I'd like to obtain the following values: EL,VLT,VTL, and GLT from
x=[Q11 Q12 0;
Q12 Q22 0;
0 0 Q66]
the x is given equal to: =[20 0.7 0;
0.7 2 0;
0 0 0.7];
I have been trying with solve as indicated below, however, 0*1 sym is the result of each component: also maybe I should try to use subs, function but nothing working unfortunely
clear all;
clc;
close all;
syms EL vlt vtl ET GLT;
y=[EL/1-vlt*vtl vlt*ET/1-vlt*vtl 0;vlt*ET/1-vlt*vtl ET/1-vlt*vtl 0;0 0 GLT]==[20 0.7 0;0.7 2 0;0 0 0.7];
z= solve(y,EL,vlt,vtl,ET,GLT);

Best Answer

You need to enclose the variables you are solving for in square brackets: 
[EL,vlt,vtl,ET,GLT] = solve(y,[EL,vlt,vtl,ET,GLT]);
returning: 
EL =
19
 
vlt =
-3/10
 
vtl =
10/3
 
ET =
1
 
GLT =
7/10
As desired.
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