0 votes 0 votes If $s^{3}+3 s^{2}+4 s+A=0$, then all the roots of this equation are in the left half plane provided that $\mathrm{A}>12$ $-3<\mathrm{A}<4$ $0<\mathrm{A}<12$ $5<\mathrm{A}<12$ Others gate1993-ec + – admin asked Sep 16, 2022 • edited Dec 1, 2023 by makhdoom ghaya admin 46.4k points 43 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.