--%>
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 : National income Gross domestic capital

    Gross domestic capital formation is always greater than gross fixed capital formation

    		•
  • Q : Maximizing consumer utility The

    The consumer maximizes the utility whenever spending patterns causes: (i) Total outlays to increase each time prices are altered. (ii) Marginal utilities of each and every good consumed to be equivalent. (iii) Marginal utilities from the last cent spent on each and ev

    		•
  • Q : Surplus of the good Describe when there

    Describe when there will be a surplus of the good?

    		•
  • Q : Relationship between interest rate and

    What is the relationship among interest rate and bond prices? Is there any difference among T-Bills versus Corporate bonds in reaching your assessment? Whenever the stock market falls, where do you assume that most investor place their money and why?<

    		•
  • Q : Market shift when exporting When the

    When the U.S. furniture market is primarily in equilibrium at point e on S0D0 and then Chinese manufacturers start exporting more furniture to the United States, then this market would shift towards a new equilibrium at: (1) point a. (2) point b. (3) point c. (4) poin

    		•
  • Q : Why value of multiplier is low In poor

    In poor countries people spend a big percentage of their income so that APC and MPC are high. Yet, the value of multiplier is low. Explain why?

    		•
  • Q : Fiscal and monetary policies in

    Explain the impact of changes in fiscal and monetary policies in curtailing inflation?

    		•
  • Q : Levels of income with no exceptions for

    A flat rate income tax for all levels of income along with no exceptions would be taken as a: (i) proportional tax. (ii) progressive tax. (iii) regressive tax. (iv) common tax. Can anybody suggest me the proper exp

    		•
  • Q : Problem on rational consumption

    Whenever you dine at an “all-you-can-eat” buffet, the rational consumption prototype is to carry on eating till: (1) The restaurant goes bankrupt. (2) You have eaten as much food as it would encompass cost had you made your own meal at hom

    		•
  • Q : Purchasing and consumption of

    The usual household maximizes the utility by spending all its money to purchase and consume a combination of goods which yields: (1) Fundamental physiological requirements and customary wants. (2) Maximum status and the social prestige. (3) Complete satisfaction of al

    		•