--%>
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 : Limitation of credit availability What

    What occurs to economy, when credit availability is limited and credit is made costlier? Answer: Aggregate demands falls

    		•
  • Q : Shifting of demand curve due to new

    Assume that the launch of Microsoft Xbox 360 moved the demand curve for Sony PlayStation 2 games from D0 to D1 throughout similar period if new game designers enter into this market and hence supplies of PlayStation 2 games shifted S0 to S1. The market equilibrium: (1

    		•
  • Q : Market demand curve for new houses The

    The market demand curve for latest houses would rise in response to a rise in: (1) construction technology. (2) The costs of lumber. (3) Housing prices. (4) Legal price ceilings on rental properties. (5) Expectations regarding future housing prices.

    Q : National disposable income What must be

    What must be added to NNPMP to obtain net national disposable income? Answer: The Net current transfers from abroad must be added to NNPMP to get national disposabl

    		•
  • Q : The Fed can control the Fed funds rate

    Question: Hubbard argues that the Fed can control the Fed funds rate, but the interest rate that is important for the economy is a longer-term real rate of interest.   How much control does the Fed have o

    		•
  • Q : Assignment Task 1 – Commercial banks in

    Task 1 – Commercial banks in United Economy have total deposits of AED 300 billion. Their reserves are AED 15 billion, two- thirds of which are with the Central Bank as deposits. There are AED 30 billion notes outside the banks. There are no coins! Calculate- a) The monetary base. b) The bank

    		•
  • Q : Explain about the marginalism theory

    Most economists believe such that people increase an activity when they perceive the expected additional benefits as exceeding the expected extra cost, but decrease their level of an activity whenever they believe the benefits from the last few units of the activity a

    		•
  • Q : Liability of tax problem If the

    If the liability to give a tax is on one person and the burden of tax fall on some other person, state the kind of tax? Answer: These are indirect taxes like sales

    		•
  • Q : Consumer Equilibrium when current

    Can someone please help me in finding out the accurate answer from the following question. When Brussels sprouts cost $1 per pound and tofu is $2 per pound and your marginal utilities (additional jollies) from either an additional pound of tofu or an additional pound

    		•
  • Q : Help If the price of K declines, the

    If the price of K declines, the demand curve for the complementary project J will:

    		•