Can any one solve this quistion?

Can someone help me to write this code? I already start but I stocked at a point !

[Cedric]

What have you done so far?

[Fatima Al Marzoqi]

Let me show you the first part which is using Gause-Jordan

this is my code

%Reading the values of resistors, voltages, initial currents, tolerance and relaxation factor

 R=input(' Enter the values of resistors in k ohm , [ R1 R2 R3 R4 R5 R6 R7 R8 R9 ] = ');

 V=input(' Enter the values of voltages in volt , [ V1 V2 ] = ');

 I=input(' Enter the values of initial currents in mA , [ I1 , I2 , I3 , 
I4 ] = ');

 T=input(' Enter the value of tolerance in mA , T = ');

 a=input(' Enter the value of relaxation factor , a = ');

 %Describe the resistor matrix R

 R= [ R(8)+R(5)+R(3) , -R(5) , 0 , -R(3) ;
    -R(5) , R(7)+R(1)+R(4)+R(5) , -R(4) , 0 ;
    0 , -R(4) , R(2)+R(6)+R(4) , -R(6) ;
    -R(3) , 0 , -R(6) , R(6)+R(9)+R(3) ];

 %Describe the voltage matrix V

 V= [ V(1) ;
    0 ;
    0 ;
    V(2) ];

 %Describe the initial currents matrix I

 I= [ I(1) ;
    I(2) ;
    I(3) ;
    I(4) ];

 %The tolerance value T

 T= T;

 %The relaxation factor value

 a= a;

 %mesh currents in mA using Gause-Jordan Elimination method

 C=[R,V];                               %augmanted matrix

 for j=1:4
    for z=2:4                          %pivoting

        if R(j,j)==0
            t=R(1,:);R(1,:)=R(z,:);
            R(z,:)=t;
        end
    end

    for i=j+1:4                             %Convert the elements below the major diagonal to zeros

       R(i,:)= R(i,:)-R(j,:)*( R(i,j)/R(j,j) );
    end
 end

 for j=4:-1:2                            %Convert the elements above the major diagonal to zeros

    for i=j-1:-1:1
        R(i,:)= R(i,:)-R(j,:)*( R(i,j)/R(j,j) );
    end
 end

 for s=1:4                               %Convert the elements on the major diagonal to ones

    R(s,:)= R(s,:)/R(s,s);
    x(s)= R(s,4);
 end

 disp (' Gause-Jordan Elemination method: ');

 R

 x'

The problem is with the last column which is x, check it also, I want to ask.. how I type the value of tolerance and relaxation factor? in a matrix or it is true what I do?

Answer 1

[Image Analyst]

For (a), try inputdlg().

For (c), try fopen(), fprintf(), and fclose().

For (d), try plot().

After that if you still need help, read this http://www.mathworks.com/matlabcentral/answers/8626-how-do-i-get-help-on-homework-questions-on-matlab-answers and come back here with your code.

[Image Analyst]

Well, it used to make sense before you totally changed your question!