... Y=[1.125,0,0 ,-0 .125;0,0.75 ,-0 .25,0;0 ,-0 .25,0.75,0 ;-0 .125,0,0,1.125] Y= 1.1250 0 -0 .1250 0.7500 -0 .2500 0 -0 .2500 0.7500 -0 .1250 0 1.1250 >> I=[4 ,-4 ,-2 ,2]' I= -4 -2 >> V=inv(Y)*I V= 3.8000 -7 .0000 -5 .0000... KVL in Fig (b) - v3 - 3v2 + v2 = v3 = - 2v2 (3) From (1) to (3), v1 = V, v2 = V PROPRIETARY MATERIAL © 2007 The McGraw-Hill Companies, Inc All rights reserved No part of this Manual may be displayed,... 3.58 For Prob 3.9 Chapter 3, Solution Let V1 be the unknown node voltage to the right of the 25 0- resistor Let the ground reference be placed at the bottom of the 5 0- resistor This leads to the