The stability of non-linear systems:
(a) Disturbed steady state coming back to its equilibrium state
(b) Non-linear systems to be in closed trajectory
(c) In limit cycles that is oscillations of the systems
(d) All of the mentioned
The question was posed to me during an online interview.
My question is based upon Liapunov’s Stability Criterion topic in division Liapunov’s Stability Analysis of Control Systems