--%>
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 : Expenditure of money on party effects

    When you pay a straight A student in advance to write up your term paper and that person expends the money on a party and then, hung-over, can’t do a good job and hence you wind up with an F for submitting sloppily written gibberish, you encompass just suffered

    		•
  • Q : Reallocation of resources through budget

    Reallocation of resources: In case, the market economy fails or does not attain the desired social objectives, the government has to interfere via budget and reallocate resources accordingly. Through its budgetary

    		•
  • Q : GDP In calculating the GDP national

    In calculating the GDP national income accountants:

    		•
  • Q : Difficulty of scarcity People in whole

    People in whole the world confront the difficulty of scarcity at always because: (i) restricted resources and times preclude producing all the goods people need. (ii) greedy capitalist monopolies charge excessively high prices. (iii) international mar

    		•
  • Q : Define involuntary unemployment

    Involuntary unemployment: Involuntary unemployment terms to a condition in which people that are willing to work are unable to obtain work.

    		•
  • Q : Business For every value of real GDP,

    For every value of real GDP, actual investment equals? A. Planned Investments B. The difference between planned investments and actual saving. C. The difference between planned saving and actual saving. D. Planned Saving

    		•
  • Q : Difference between

    Elucidate the differences among the frictional, structural, and cyclical forms of unemployment.

    		•
  • Q : Declines of percentage of income paid

    Since the percentage of income paid in taxes generally declines as taxpayer income increases, standard sales taxes and “sin” taxes [for example, excise taxes upon liquor or tobacco] are illustrations of: (1) proportional t

    		•
  • Q : Poorer good for American families The

    The most probable of the following to be a poorer good for most American families who purchase some of each of such products throughout a given year would be: (i) Plastic surgery. (ii) College textbooks. (iii) Films on DVD. (iv) Cup-a-Noodles soup. (v) Downloads for t

    		•
  • Q : Paradox of Value-total utility and

    I have a problem in economics on Paradox of Value-total utility and marginal utility. Please help me in the following question. Water is more precious than diamonds when measured by _____, however less valuable when measured by _____. (i) Total cost, total benefit. (i

    		•