Figure 2 3. Routh-Hurwitz Criterion Determine the range of K for stability of a unity-feedback control system whose open-loop transfer function is as follows. (Hint: You need to write the closed- loop transfer function and then consider the range of K so that the column of the Routh- Hurwitz array will not change the sign.) K G(s) = s(s+3)(s+4) 4. Routh-Hurwitz Criterion For a unity-feedback control system with the following forward transfer function, using the Routh-Hurwitz criterion to determine whether the system is stable. 10 G(s) = s(s-2)(2s+7) 5. Routh-Hurwitz Criterion Consider the following characteristic equation for a closed-loop system, using the Routh-Hurwitz stability criterion, determine the range of K for stability. s+2s+(3+K)s² + 8s +20=0 Page 1 of 1