1X1 bus impedance matrix with bus 1 and reference bus   
 
    1.2i  
 
 After establishing bus 2   
 
    1.2i    1.2i  
    1.2i    1.4i  
 
 Connecting a impedance between bus 3 and 1   
 
    1.2i    1.2i    1.2i  
    1.2i    1.4i    1.2i  
    1.2i    1.2i    1.5i  
 
 After adding impedance from bus 3 to reference   
 
    1.2i    1.2i    1.2i    1.2i  
    1.2i    1.4i    1.2i    1.2i  
    1.2i    1.2i    1.5i    1.5i  
    1.2i    1.2i    1.5i    3.i   
 
 After elemination of 4th row and column   
 
    0.72i    0.72i    0.6i   
    0.72i    0.92i    0.6i   
    0.6i     0.6i     0.75i  
 
 After adding impedance between buses 2 and 3   
 
    0.72i    0.72i    0.6i     0.12i  
    0.72i    0.92i    0.6i     0.32i  
    0.6i     0.6i     0.75i  - 0.15i  
    0.12i    0.32i  - 0.15i    0.62i  
 
 The Bus Impedance Matrix is   
 
    0.6967742i    0.6580645i    0.6290323i  
    0.6580645i    0.7548387i    0.6774194i  
    0.6290323i    0.6774194i    0.7137097i