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The characteristic polynomial of a system is \[ s^3+2s^2+4s+K. \] The system is marginally stable for

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For marginal stability using Routh criterion, look for a complete zero row or a first-column element becoming zero.

Updated On: Jun 25, 2026

\(K=0\)
\(K=8\)
\(0<K<4\)
\(0<K<8\)

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The Correct Option is B

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