0 0 votes The gain margin for the system with open-loop transfer function $\mathrm{G}(s) \mathrm{H}(z)=\frac{2(1+z)}{s^{2}}$, is $\infty$ $0$ $1$ $-\infty$ Control Systems gate2004-ec control-systems transfer-function + – admin 256 views answer comment Share Follow Add Sync Questions Print 0 reply Please log in or register to add a comment.