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//Example 2_9 page no:94
clc;
R5=5;
A=[0.42,-0.167,-0.25,
-0.42,0.5,0.45,
0,-1,1]
B=[18,
-15,
20];
X=inv(A)*B;
V1=X(1);
V2=X(2);
V3=X(3);
I5=V3/5;
P=I5^2*R5;
disp(P,"the power absorbed by 5 ohm resistor is (in W)");
//in text book value of I5^2 is rounded up so result vary slightly
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