Question: A system has the second-order characteristic equation s2 + as + b = 0, where a and b are constant parameters. Determine the necessary and

A system has the second-order characteristic equation
s2 + as + b = 0,
where a and b are constant parameters. Determine the necessary and sufficient conditions for the system to be stable. Is it possible to determine stability of a second-order system just by inspecting the coefficients of the characteristic equation?

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