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//Chapter 3, Example 3.7
clc
//Initialisation
v1=50 //voltage
v2=15 //voltage
v3=100 //voltage
r1=10 //resistance in ohm
r2=20 //resistance in ohm
r3=30 //resistance in ohm
r4=25 //resistance in ohm
//Calculation
//by making a two linear equations, and solving them by matrix method
a=[(-13/60) (1/20);(1/60) (-9/100)]
b=[-5;(-100/30)]
x=a\b
I1=x(2)/25 //current in ampere
//Results
printf("Current, I1 = %.1f A",I1)
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