RMIT International University Vietnam, Ho Chi Minh City
Quantitative analysis
ECON 1267

Summer 2016
S_HE.04_Matrix Operations
1) A fast food chain has three shops, A, B and C. The average daily sales and profit in each
shop is given in the following table:
Units Sold
Units Profit
Shop A
Shop B
Shop C
Shop A
Shop B
Shop C
Burgers
800
400
500
20p
40p
33p
RMIT International University Vietnam, Ho Chi Minh City
Quantitative analysis
ECON 1267

Summer 2016
S_HE.03 Simultaneous equations
1) Determine whether the system of linear equations
=
+ =
Has (a) a unique solution, (b) infinitely solutions, or (c) no solution.
Solution:
We begin by writing the system as an augmented matrix as below
1 2 6
2 3 12
 )
RMIT International University Vietnam, Ho Chi Minh City
Quantitative analysis
ECON 1267

Summer 2016
S_CE.02 Non linear Functions
1) Solve the following Quadratic Equations:
(a) a2 6a + 5 = 0 (a  5)(a  1) = 0 a = 5 or a = 1
(b) P2 + 6P 5 = 0 P2 6P + 5 = 0 (P  5) (P  1) = 0 P = 5 or P = 1
(c) U2 7 = 0 (U 7 ) U 7 0 U 7 or U 7
(d) A2 = 6A A2 6A = 0 A (A
RMIT International University Vietnam, Ho Chi Minh City
Quantitative analysis
ECON 1267

Summer 2016
CE_03  Simultaneous Equations
Solve the following simultaneous equations by GaussJordan elimination method
1)
+ =
+ =
We begin by writing the system as an augmented matrix as below
2 4
(
3 3
6 10
 )
3 6
1 2
1 1
3 5
 )
1 2
Simplify 2 rows by dividi
RMIT International University Vietnam, Ho Chi Minh City
Quantitative analysis
ECON 1267

Summer 2016
Extra Examples on Linear Inequality
1. For the following questions:
(a) Graph the inequality constraints
(b) Shade in the feasible region.
(c) Calculate the corner point of the feasible region
(i)
3x + 2y 15
6x + 9y 36
(ii)
y + 5x 10
y + 2x 6
2y + 7x 14
2
RMIT International University Vietnam, Ho Chi Minh City
introduction to marine
ECON 2015

Spring 2015
Y=A*F(L,K,H,N)
The most valuable place that can provide profit for investor must meet 4
conditions: Labor, Physical Capital, Natural Resource and Technogical
Knowledge.
Labor
First of all According to the World Population Prospects: The 2015 Revision. (Me
RMIT International University Vietnam, Ho Chi Minh City
Macroeconomics 2
ECON 1042

Spring 2017
Which of the following is a function of inventory  all of the above are functions of inventory.
Which of the following would not generally be a motive for a firm to hold inventories  to minimize holding costs
All of the following statements about ABC an
RMIT International University Vietnam, Ho Chi Minh City
Macroeconomics 2
ECON 1042

Spring 2017
Acquisitions are attractive because1. they are quicker to execute than
greenfield investments, 2. it is easier and less risky for a firm to acquire
desired assets than build them from the ground up, 3. firms believe they can
increase the efficiency of an
RMIT International University Vietnam, Ho Chi Minh City
Macroeconomics 2
ECON 1042

Spring 2017
Part I: 30 Multiple choice questions (60 marks)
1. Because of the global crisis, Vietnamese people have chosen to cook more at home and eat less
at restaurant. This change in behaviour, by itself, has
a. reduced measured GDP by the full value of the resta
RMIT International University Vietnam, Ho Chi Minh City
Macroeconomics 2
ECON 1042

Spring 2017
1. Which of the following is a major source of inflation in Vietnam?
a. faster growth of the money supply than growth in GDP
b. monopoly power
c. low productivity
d. government regulation
2. If a government supplies more money than the quantity people wan
RMIT International University Vietnam, Ho Chi Minh City
Macroeconomics 2
ECON 1042

Spring 2017
Part I: 30 Multiple choice questions (60 marks)
1. Because of the global crisis, Vietnamese people have chosen to cook more at home and eat less
at restaurant. This change in behaviour, by itself, has
a. reduced measured GDP by the full value of the resta
RMIT International University Vietnam, Ho Chi Minh City
Macroeconomics 2
ECON 1042

Spring 2017
Vietnam National University
International University
School of Business
FACTORS AFFECTING THE LEVEL OF
SATISFACTION ON USING EDUSOFT WEB
AT INTERNATIONAL UNIVERSITY
In Partial Fulfillment of the Requirements of the Degree of
BACHELOR OF ARTS in Business A
RMIT International University Vietnam, Ho Chi Minh City
Macroeconomics 2
ECON 1042

Spring 2017
The Super Bowl: More Than a SingleAdvertising Event
Summary
Main issues:
Analysis the high cost issue
Analysis of there being no solid evidence
Questions in the case
Questions in the case cont.
Alternative #1
Alternative #2
Alternative #3
Course of actio
RMIT International University Vietnam, Ho Chi Minh City
Macroeconomics 2
ECON 1042

Spring 2017
Chocopie SWOT analysis:
OPPORTUNITY:
Nowadays, thanks to the rapid development of information technology, along with
the introduction of social networking sites with features such as Facebook,
Instagram allows individuals and businesses the opportunity to
RMIT International University Vietnam, Ho Chi Minh City
Macroeconomics 2
ECON 1042

Spring 2017
Chap 29: The Monetary System
I.
The meaning of Money
a. Money is ? (t xem nh ngha)
b. Functions of Money:
i. Medium of exchange (3 functions ny mn nn t xem nh ngha v v d s d
hn)
ii. Unit of account
iii. Store of value
Liquidity: tnh thanh khon: l tnh m as
RMIT International University Vietnam, Ho Chi Minh City
Quantitative analysis
ECON 1267

Summer 2016
S_CE_03 Building Multiple Regression Models
1) Below are shown the excel outputs for the simple regression model (first one) and quadratic
regression model (second one).
SUMMARY OUTPUT
Regression Statistics
Multiple R
R Square
Adjusted R Square
Standard E
RMIT International University Vietnam, Ho Chi Minh City
Quantitative analysis
ECON 1267

Summer 2016
S_CE_03 Building Multiple Regression Models
1) Below are shown the excel outputs for the simple regression model (first one) and quadratic
regression model (second one).
SUMMARY OUTPUT
Regression Statistics
Multiple R
R Square
Adjusted R Square
Standard E
RMIT International University Vietnam, Ho Chi Minh City
Quantitative analysis
ECON 1267

Summer 2016
QUANTITATIVE ANALYSIS
Week 6: System of linear equations and matrix
methods (continues) (Bradley, Chapters 9)
(9.5)
1
Learning Objectives Chapter 9 (9.5)
Solve system of linear equations by inverse matrix
method
Leontief
Input/output analysis
2
Basic Prop
RMIT International University Vietnam, Ho Chi Minh City
Quantitative analysis
ECON 1267

Summer 2016
S_CE_01 Linear and Nonlinear Functions
Linear Functions :
A1) a) slope = 1 (when x increases by 1 unit, y increases by 1 unit too)
intercept = 2 (the line cuts the yaxis at the point of 2)
b) slope = 4 (when x increases 1 unit, y decreases by 4 units)
RMIT International University Vietnam, Ho Chi Minh City
Quantitative analysis
ECON 1267

Summer 2016
S_CE_04 TimeSeries Forecasting and Index Numbers
1) The following data show yields on RBA 30day treasury bills for the period 1993 through 2004.
Year
Yield (%)
1993
5.20
1994
5.41
1995
7.58
1996
7.17
1997
5.45
1998
5.02
1999
4.94
2000
5.32
2001
5.04
200
RMIT International University Vietnam, Ho Chi Minh City
Quantitative analysis
ECON 1267

Summer 2016
S_CE_06 Linear Algebra and applications
1
1) Given the matrices: A = 2 , B =
2
1 2 0
, C =
0
1
1
1
2
1
0
5
1
Determine each of the following, if possible:
(a) A + C
(b) BT + C
(d) ATBT
(c) BC
(e) BTAT
a. Addition is not possible as the dimensi
RMIT International University Vietnam, Ho Chi Minh City
Quantitative analysis
ECON 1267

Summer 2016
CE_05  Simultaneous Equations
1. Solve the following simultaneous equations by elimination method. If there is no solution,
explain why there is no solution:
a.
x 3 y 10
2x 5 y 13
b.
2x 3 y 10
4x 6 y 20
c.
2x 3 y 8
x 2 y 5
d.
3x 2 y 10
6 y 9x 20
a. x+3y=
RMIT International University Vietnam, Ho Chi Minh City
Quantitative analysis
ECON 1267

Summer 2016
S_CE_06 Linear Algebra and applications
1
1) Given the matrices: A = 2
,B=
2
1
0
0
,C=
1
2
1
1
2
1
0
5
1
Determine each of the following, if possible:
(b) BT + C
(a) A + C
(d) ATBT
(c) BC
(e) BTAT
a. Addition is not possible as the dimensions
RMIT International University Vietnam, Ho Chi Minh City
Quantitative analysis
ECON 1267

Summer 2016
S_CE_01 Linear and Nonlinear Functions
Linear Functions :
A1) a) slope = 1 (when x increases by 1 unit, y increases by 1 unit too)
intercept = 2 (the line cuts the yaxis at the point of 2)
b) slope = 4 (when x increases 1 unit, y decreases by 4 units)