Consider the following signal flow graph, which have the same transfer

1.	Consider the following signal flow graph, which have the same transfer function, would include
A.	1 and 2
B.	2 and 3
C.	2 and 4
D.	1 and 4
Answer» D. 1 and 4

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Consider the following signal flow graph, which have the same transfer function, would include

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