Question: The characteristic equation for a feedback system is s 4 5 + 2 5 n 4 + 8 5 n 3 + 1 6 s

The characteristic equation for a feedback system is s45+25n4+85n3+16sn2+165+16=0. The system is
marginally stable
unstable
stable
concitionally stable
The characteristic equation for a feedback system

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