The purpose of this activity is to solve a circuit problem using nodal method and matrix technique in FreeMat.
Problem
i1+i2=i3
V3=10i3
V2=5i2
V1=20i1
KVL:
15-V3-V1=0
V3+7+V2=0
==> solve for
20i1+10i3=15
5i2+10i3=-7
i1+i2-i3=0
by using FreeMat, i3 can be solved as following
Therefore, i3 = -0.1875A
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