2.Given the national income model:

Y = C + I0 + G0 + (X-M)

C = a + b(Y-T+R),0

T = tY,0

where R is transfer payments, (X-M) is net exports, and the other variables are as defined in class.Write the model in the form of AX=D, where A is a coefficient matrix, X is a variable vector, and D is a constant vector.Check whether A is nonsingular.

9. Solve the national income model in #2, above, by matrix inversion or by Cramer's Rule.