--%>
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 : Fiscal deficits What are the causes of

    What are the causes of the fiscal deficits experienced by many developed nations in the past three years and what are the main effects of the resulting government borrowing? For example – Greece/Ireland/Portugal/Spain situation and the large def

    		•
  • Q : Redistribution of Income through budget

    Redistribution of Income: Each and every economy strives to achieve a society, where inequality of income and wealth must be minimum. In order to attain this objective via government budget the government spends adequate money on social security schem

    		•
  • Q : Purpose of Balance of Payment Meaning:

    Meaning: - as mentioned above, the balance of payments is a periodic accounting of international economic transactions. Each country having regular economic transactions with other countries prepares periodically the final accounts of their foreign receipts and paymen

    		•
  • Q : Market price decrement according to

    When heroin were legalized, in that case the: (w) market price of heroin would drop considerably. (x) demand would raise although supply would decrease. (y) demand would decrease but supply would increase. (z) price of cocaine would raise.

    Q : How banking evolved into the

    Give a short history of how banking evolved into the sophisticated operation. Start first with the Goldsmith and sum up with the Banking system which we experience nowadays.

    		•
  • Q : Fiscal measures to accurate

    Describe the fiscal measures to accurate the condition of deficient demand and excess demand. Answer: Fiscal measures are the government’s budgetary policy th

    		•
  • Q : Profit sharing plan For the firm, the

    For the firm, the major goal of profit sharing plans is to:

    		•
  • Q : Expanding consumption of a good I have

    I have a problem in economics on Expanding consumption of a good. Please help me in the following question. Your consumption of a good tends to expand if it’s: (i) Relative marginal utility surpasses its relative price. (ii) Total utility is les

    		•
  • Q : Are government budget scarcities always

    ‘The country is at present in recession and this has led to worse tax revenue and high expenses. The effect is a huge deficit. The government decides to increase taxes and lower government expenses. Is this an excellent idea?’

    		•
  • Q : FED targeting the interest rate versus

    What is the main difference between FED targeting the interest rate versus inflation and which one is Bernanke using nowadays? Name some countries which use this method nowadays.

    		•