4. (15 marks) Consider the following equation: where i denotes the complex number satisfying i2--1 (a)...
please, i need answeer for all 4 questions Consider National-Income Model: National Income: Consumption: Investment: Government Sector: Taxes: Y=C+I+G C = a + b (Y-T) I=k+rY G=Go T=f+jY 0<b<1 0<x<1 a> 0 in mln dollars; k>0 in mln dollars; Go > in mln dollars f> 0 in mln dollars; 0<j<1 1) Discuss in words the meaning of each of the equations in the model (3 points); 2) Find the equilibrium level of GDP (Y) in reduced form (3 points); 3)...