--%>
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 : Determining bank problem Which of the

    Which of the given is a bank? a) Post office saving banks (b) LIC (c) UTI (d) IDBI.

    		•
  • Q : Explain reason why land Land, capital

    Land, capital and labor are all scarce since: (1) advertising mainly over stimulates human wants. (2) once employed they cannot be used again. (3) each productive resource needs a monetary return for its employ. (4) inheritance under a capitalism prot

    		•
  • Q : Methods that FED can use to make money

    What are the four methods that FED can use to make money? What are the most powerful one and what technique the FED to create a gradual easing of the money supply either created or destroyed most seldom uses?

    		•
  • Q : IMF? In saying that the present system

    In saying that the present system of floating exchange rates is managed we mean that: IMF officials determine exchange rates on a day-to-day basis. countries that allow their exchange rate to move freely will lose their borrowing privileges with the IMF. the value of any IMF member's currency

    		•
  • Q : Principles of macroeconomics What are

    What are the “powers of the Federal Reserve

    		•
  • Q : Define Quantity of a good Quantity of a

    Quantity of a good: The quantity of a good which buyers demand is found out by the price of the good, income, the prices of associated goods, expectations, tastes, and the number of buyers.

    		•
  • Q : Sources of demand for foreign currency

    State main sources of demand for foreign currency? Answer: The four main sources of demand for foreign currency are as follows: A) To buy services and goods from other countries. B) To send a gift abroad.

  • Q : Principles of macro economics what are

    what are the four supply factors of economic growth

    		•
  • Q : National income Gross domestic capital

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

    		•
  • Q : Fundamental supply and demand in foreign

    Question: Changes in currency supply and demand can be traced back to changes in fundamental supply and demand in foreign and domestic i._____________________ markets and foreign and domestic ii.___________________

    		•