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2.039P the textbook Note feedback weighted summer represented R, R1 V3 Figure 1 Substitute Hence obtained From source source From source is, 100 above R, R1 V4 Figure 2 Substitute obtained resistance 100 and 100 is above how R, R, V2 V2 Figure 3 Substitute obtained The From source and The (d) the above show R, R, Figure 4 Substitute =-(6v,) Hence required resistances seen resistance From source input require therefore sisto and shun we can implement R, W R, a R1 Figure 5 -100 100+100 100+100