A second order has 0 < ζ < 1, the poles of the system are:

1.	A second order has 0 < ζ < 1, the poles of the system are:
A.	Real but not repeated
B.	Real and repeated
C.	Complex conjugate
D.	Purely imaginary
Answer» D. Purely imaginary

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A second order has 0 < ζ < 1, the poles of the system are:

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