I need to solve this problem in Matlab using an iterative me

I need to solve this problem in Matlab using an iterative method

This is what I have already

T(1)=300;
T(2)=300;
T(3)=300;
T(4)=300;

R(1)=500+400+100+T(2)-4*T(2);
R(2)=500+100+T(1)+T(3)-4*T(2);
R(3)=500+100+T(2)+T(4)-4*T(3);
R(4)=500+100+T(3)+2*T(4);

Solution

clc;

clear all;

%Define Variables

T1=300; T2=300; T3=300; T4=300;

%Equations and Residuals

R1=[abs(500+400+100+T2-(4*T1))]; R2=[abs(500+100+T1+T3-(4*T2))]; R3=[abs(500+100+T2+T4-(4*T3))]; R4=[abs(500+100+(2*T3)-(4*T4))]; Rt=[R1 R2 R3 R4];

while Rt> 0.1 %Repeat until all residuals converge less than 0.1

Rt(1)=[abs(500+400+100+T2-(4*T1))]; Rt(2)=[abs(500+100+T1+T3-(4*T2))]; Rt(3)=[abs(500+100+T2+T4-(4*T3))]; Rt(4)=[abs(500+100+(2*T3)-(4*T4))];

Rm=max(Rt); %Identify the largest residual (abs(max) vs abs(min))

if Rt(1)==Rm %Find the corresponding index and change the temperature

elseif Rt(2)==Rm

elseif Rt(3)==Rm

else Rt(4)==Rm

end

end

Rt