Solving Matrix Equations With Unknown at Both Sides

Hello,
How can I solve matrix equations in Matlab? Consider following case:
Thank you

Answers (3)

Matt J
Matt J on 26 Jun 2023
Edited: Matt J on 26 Jun 2023
Since these are linear equations, you would re-arrange in the form
Matrix*[T1;T3;F2] =[4; 0; 5]
and solve normally.
T1=optimvar('T1');
T2=optimvar('T2');
F2=optimvar('F2');
prob=eqnproblem;
prob.Equations.eqn=[1 -0.5 4;-0.5 2 0; 4 0 3]*[T1;0;T2]==[4;F2;5];
sol=solve(prob)
Solving problem using lsqlin.
sol = struct with fields:
F2: -0.3077 T1: 0.6154 T2: 0.8462
syms T1 T3 F2
eqns = [1 -0.5 4;-0.5 2 0; 4 0 3]*[T1;0;T3]==[4;F2;5];
solve(eqns)
ans = struct with fields:
F2: -4/13 T1: 8/13 T3: 11/13

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on 26 Jun 2023

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