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[QUOTE="thedudescousin, post: 1596797, member: 74534"] The flow through acommunication circuit is modeled by the graph below. Solve the circuit. Let the face be a circut 120 -----> :rolleyes: --x2--->:rolleyes: -----> 150 ^ ^ l x1 l x3 l l 340 -----> :rolleyes: --x4--->:rolleyes: -----> 310 There is some formatting error with the x1 and x3, but x1 goes from the bottom left circuit to the top left circuit and x3 goes from the bottom right circut to the upper right circuit. I just wanted someone to check what I have done to make sure it is correct and that I haven't forgotten anything. Thanks! I have : 120 + x1 = x2 340 = x1 + x4 x2 + x3 = 150 x4 = 310 + x3 Matrix -1 1 0 0 120 1 0 0 1 340 0 1 1 0 150 0 0 -1 1 310 after row reducing the matrix it comes out as 1 0 0 1 340 0 1 0 1 460 0 0 0 -1 -310 0 0 0 0 0 The equations are x1 + x4 = 360 x2 + x4 = 460 x3 - x4 = 310 Is this correct? Am I missing something? Thanks! [/QUOTE]
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