EBK ECONOMICS
13th Edition
ISBN: 8220106798607
Author: Arnold
Publisher: CENGAGE L
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Question
Chapter 3, Problem 7QP
(a)
To determine
Identify the shift in the demand curve.
(b)
To determine
Identify the shift of the demand curve.
(c)
To determine
Identify the shift of the demand curve.
(d)
To determine
Identify the shift of the demand curve.
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2. The demand and supply functions for two interdependent goods X and Y are givenbyQDX = 7 − 4PX + 2PYQSX = −6 + 4PX − PYQDY = 1 + PX − PYQSY = −4 − PX + 2PY(a) Find the market equilibrium condition for each good. (b) Express the equilibrium conditions in the matrix form Ax = b.(c) Find the inverse of matrix A. (d) Given your result in part (c), calculate the equilibrium prices. (e) What is the equilibrium quantity for goods X and Y ?
2. A two-sector macro-economic model satisfies the following structural equations:Y = C + I∗C = aY + bwhere 0 < a < 1 and b > 0 are parameters and I∗ denotes investment.(a) What are the exogenous and endogenous variables in this model? (b) Re-arrange this system of equations to express the endogenous variables in terms of the exogenous variables and parameters. (c) Express this system of equations in the matrix form Ax = b. (d) Show that the inverse of matrix A exists.
The equilibrium prices P1 and P2 for two goods satisfy the equations:−4P1 + P2 = −132P1 − 5P2 = −7(a) Express this system of equations in the matrix form Ax = b. (b) What is the determinant of matrix A? (c) Find the inverse of matrix A. (d) Using matrix algebra, calculate the equilibrium prices
Chapter 3 Solutions
EBK ECONOMICS
Ch. 3.1 - Prob. 1STCh. 3.1 - Prob. 2STCh. 3.1 - Prob. 3STCh. 3.1 - Prob. 4STCh. 3.2 - Prob. 1STCh. 3.2 - Prob. 2STCh. 3.2 - Prob. 3STCh. 3.3 - Prob. 1STCh. 3.3 - Prob. 2STCh. 3.3 - Prob. 3ST
Ch. 3.3 - Prob. 4STCh. 3.3 - Prob. 5STCh. 3 - Prob. 1QPCh. 3 - Prob. 2QPCh. 3 - Prob. 3QPCh. 3 - Prob. 4QPCh. 3 - Prob. 5QPCh. 3 - Prob. 6QPCh. 3 - Prob. 7QPCh. 3 - Prob. 8QPCh. 3 - Prob. 9QPCh. 3 - Prob. 10QPCh. 3 - Prob. 11QPCh. 3 - Prob. 12QPCh. 3 - Prob. 13QPCh. 3 - Prob. 14QPCh. 3 - Prob. 15QPCh. 3 - Prob. 16QPCh. 3 - Prob. 17QPCh. 3 - Prob. 18QPCh. 3 - Prob. 19QPCh. 3 - Prob. 20QPCh. 3 - Prob. 21QPCh. 3 - Prob. 22QPCh. 3 - Prob. 23QPCh. 3 - Prob. 24QPCh. 3 - Prob. 25QPCh. 3 - Prob. 26QPCh. 3 - Prob. 27QPCh. 3 - Prob. 28QPCh. 3 - Prob. 1WNGCh. 3 - Prob. 2WNGCh. 3 - Prob. 3WNGCh. 3 - Prob. 4WNGCh. 3 - Prob. 5WNGCh. 3 - Prob. 6WNGCh. 3 - Prob. 7WNGCh. 3 - Prob. 8WNGCh. 3 - Prob. 9WNG
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