please see the screenshot

5. Consider a two-period world with two countries, called Home and Foreign, that receive an endowment each period denoted as Yt, t = 1, 2 for Home and Yff', t = 1, 2 for Foreign. The two countries have expenditures in investment and government expenditures denoted as It, at = 1,2 and Gt, t = 1,2 for Home and It\