--%>
Assignment Help - homework help

Explain Product Market Equilibrium.

To begin with, let us recall our three-sector product-market equilibrium model given as 

C + I + G = C + S + T

To this three-sector model, we now add the foreign trade-the exports (X) and imports (M). with the addition of X and M, the four-sector product-market equilibrium condition is written as 

C + I + G + (X - M) = C + S + T 

The variables X and M need some explanation and quantification exports (X) of a country depend on a variety of factors governing the foreign demand for its goods and services. The inclusion of foreign demand parameters in the domestic model of a country is neither an easy task nor a necessity for a simplified model. Therefore, X is assumed to be a constant factor, that is,

X = X

As regards imports, imports (m) of a country are a function of a number of factors, however, for the sake of analytical simplicity; imports are treated as the function the country's national income(Y). That is import function takes the following form

M = + mY

Where, M is autonomous import and m is marginal propensity to import, the proportion of marginal national income spent on imports.

With X and M defined, the four- sector product-market equilibrium condition given in can be rewritten as 

C+ I + G + X - M - mY = Y = C + S + T 

The product-market equilibrium condition can also be expressed as 

Y = C + I + G + X - M - mY

Where C = a + by d( where Yd = Y - T = disposable income)

S = - a + (I - B) y (where I - B = mps)

I = I - Hi (where h > 0) 

G = G, (where G is constant)

T =T + t y, (where T is constant tax and t is tax rate <1)

By substituting the equilibrium level of income can be expressed as

Y = a + b [Y - (T + t Y)] + I - hi + G +X - M - my

=a + by - b t - bty + I - hi + G + X - M - my 

Y = 1 / 1-b+ bt + m (a - b T + I - hi + G + X - M

Y = 1 / 1 - b (1 - t) +m (a - b T + I - hi + G + X - m 

Note that the term 1/ (1 - b + bt + m) is tax-trade multiplier which may be redesignated as mu. Also let us designate the sum of the five constants, viz a, i. G, X, and M as A. by substitution these value 

Y = mu (a - b T - hi)

(Where mu is tax-trade multiplier and A = a + I + G + X - M)

Equation  gives the aggregate demand (AD) function in a four-sector model. 

   Related Questions in Macroeconomics

  • Q : Value of the net benefits Whenever

    Whenever consumers paid an amount for water which reflects the value of the net benefits they obtain from consuming it, water would outcome: (1) Maximum consumer excess. (2) Zero consumer excess. (3) Total revenue equivalent to variable cost. (4) Zero

    		•
  • Q : Macroeconomics-fiscal and monetary

    1) How can governments seek to control their national economies through fiscal and monetary policies?2) What are the causes of the fiscal deficits experienced by many developed nations in the past three years and what are the main effects

    		•
  • Q : Shifting of market problem When this

    When this market starts in equilibrium at point e on S0D0 and then young American families rousingly “inherit” furniture as their baby-boomer parents shift into smaller retirement homes, then this market will tend to shift in the direction of: (i) point i.

    		•
  • Q : Supply law and it's factors State the

    State the Law of supply and explain the factors that affecting supply of commodity

    		•
  • Q : Explain the term Macroeconomics

    Macroeconomics is a study of: (1) the economy as an entire or in the aggregate. (2) worldwide economic problems of individual households. (3) interactions among firms and households in one exact market or industry. (4) the rising income inequality wit

    		•
  • Q : Define Macro Economics Macro Economics

    Macro Economics: Macro economics studies the economy as an entire.

    		•
  • Q : Principles of macroeconomics Explain

    Explain the concept of “economies of scale” and “increasing returns”.

    		•
  • Q : Utilization of Bond market to make and

    How does the FED utilize the bond market to make and destroy money? Which technique do developed countries utilize to decrease the chance of experiencing inflation? What about the Banana Republicans and inflation, do they have this means acessible to

    		•
  • Q : Cost of a foreign currency When cost of

    When cost of a foreign currency increases its supply too increases. Elucidate why?

    		•
  • Q : Principles of macroeconomics What are

    What are the “powers of the Federal Reserve

    		•