The phase margin of a system with the open-loop transfer functionG(s)

1.	The phase margin of a system with the open-loop transfer functionG(s) H(s) = (1 - s) is(1 + s)(2 + s)
A.	0
B.	63.4
C.	90
D.
Answer» E.

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The phase margin of a system with the open-loop transfer functionG(s) H(s) = (1 - s) is(1 + s)(2 + s)

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