Two country world
Country 1



Country 2



where  is GDP,
is GDP,  is
consumption,
is
consumption,  is investment,
is investment,
 is exports, and
is exports, and  is imports. The subcripts
is imports. The subcripts
refer to Country 1 and Country 2.
Note:  and
and 
1. Derive the multiplier for  on
on  .
.
2. Explain the economics in words.