0 votes 0 votes The characteristic equation of a linear time-invariant (LTI) system is given by $$\Delta(s)=s^{4}+3s^{3}+3s^{2}+s+k=0$$ The system is BIBO stable if $0<K<\frac{12}{9}$ $k>3$ $0<k<\frac{8}{9}$ $k>6$ new gate2019-ee + – Arjun asked Feb 12, 2019 • edited Nov 13, 2019 by go_editor Arjun 15.9k points answer comment Share See all 0 reply Please log in or register to add a comment.