a. The equations below represent the node voltages obtained usingnodal analysis of the circuit shown in Figure(2). Solve the equations using MATLAB. 3 V_{1}-2 V_{3}=12 11 V_{2}-6 V_{3}-5 V_{4}=-90 -15 V_{1}-6 V_{2}+31 V_{3}-10 V_{4}=120 -V_{2}-2 V_{3}+3 V_{4}=36

b. Enter the circuit in Multisim and run the simulation to find thevalues of all node voltages. The results should agree with thoseobtained in (a) 12