a. The loop equations for the circuit shown in Figure 1 are stated below. 12 I_{1}-2 I_{2}-2 I_{3}=0 -2 I_{1}+7 I_{2}-2 I_{4}=-6 -2 I_{1}+7 I_{3}-2 I_{4}=6 -2 I_{2}-2 I_{3}+12 I_{4}=0 Solve the above equations using MATLAB to find all the loopcurrents.

b. Enter the circuit in Multisim and run the simulation to find the values of all loop currents. The results should agree with those obtained in (a)