Consider the following infinitely repeated prisoners dilemma game.

The feasible stage-game payoffs of this game are depicted in Figure 22.6 of your book.

1. Determine how an average payoff of (2,2) can be obtained. (5)
2. Determine whether or not (2,2) can be supported as the result of a subgame perfect equilibrium. (10)

2 D 4,4 -2, 6 D 6, -2 0,0