Problem 6 [Total 10 points] For each of the model trajectories shown below: (a) [5 points] Identify the cases with attractors and state what type of attractor. If no attractor, state corresponding equilibrium or oscillation type. (b) [5 points] Draw an approximate time series graph for one of the variables in each case. II. V 0.5 0.5 12 15 iv. 13