What is region of attraction? * It is the set of values for the state vector such that if the initial condition is chosen from this set, the trajectory converges to the equilibrium point it is the set of values for the state vector such that if the initial condition is chosen from this set, the trajectory diverges away from the equilibrium point It is the set of values for the state vector such that if the initial condition is chosen from the complement of this set, the trajectory converges to the equilibrium point it is the set of values for the state vector such that if the initial condition is chosen from this set, the trajectory converges to zero What is the implication of global asymptotic stability * infinitely large region of attraction infinitely many equilibrium points infinitesimally small region of attraction No region of attraction What are poles?* Roots of the characteristic equation coefficients of the characteristic equation factors of the characteristic equation variables of the characteristic equation