Assignment 1, Math for Economics I (28 points)
Due Friday, February 6, in recitation
1. (3 pts) In a Kentucky town, the monthly charge for waste collection is a linear function of the amount of waste.
New York University
Department of Economics
V31.0006
Mathematics for Economists
C. Wilson
May 6, 2010
Spring 2010 Final Exam
The value of each question is given in the parenthesis.
1. (5) Write your n
New York University
Department of Economics
V31.0006
Mathematics for Economists
C. Wilson
April 11, 2011
Spring 2011 Midterm II
The value of each question is given in the parenthesis.
1. (4) Write you
New York University
Department of Economics
V31.0006
Mathematics for Economists
C. Wilson
February 23, 2010
Spring 2010 MidTerm Exam I Answer Key
The value of each question is given in the parenthesis
New York University
Department of Economics
V31.0006
Mathematics for Economists
C. Wilson
May 15, 2012
Spring 2011 Final Exam Answer Key
The value of each question is given in the parenthesis.
1. (5)
New York University
Department of Economics
ECON-UA 6
Mathematics for Economists
C. Wilson
May 7, 2012
Problem Set 11 Answer Key
1. The utility function u : R2 R for the household is
+
u(x) = x1 + 2 x
Assignment 9, Math for Economics I (28 points)
Due Friday, April 24, in recitation
Write neat solutions for the problems below. Show all your work. If you only write the answer with no work, you will
New York University
Department of Economics
V31.0006
Mathematics for Economists
C. Wilson
May 9, 2012
Spring 2010 Final Exam Answer Key
The value of each question is given in the parenthesis.
1. (5) W
Assignment 3, Math for Economics I (28 points)
Due Friday, February 20, in recitation
1. (2 points) A rm produces a commodity and receives $100 for each unit sold. The cost of producing and selling
x
Assignment 8, Math for Economics I (28 points)
Due Friday, April 10th, in recitation
1. (2 pts) Suppose the elasticity of demand for Brand Xs product at its current price is 0.5. If Brand X slightly
i
Assignment 6, Math for Economics I (28 points)
Due Friday, March 27, in recitation
1. (4 pts) Let f (x) = ln(1 + x2 ). On what intervals is f convex?
Solution: Chain rule gives f (x) =
2x
. Now we app
Assignment 2, Math for Economics I (28 points)
Due Friday, February 13, in recitation
Write neat solutions for the problems below. Show all your work. If you only write the answer with no work, you wi
Assignment 10, Math for Economics I (28 points)
Write neat solutions for the problems below. Show all your work. If you only write the answer with no work, you will
not be given any credit. Please do
Assignment 7, Math for Economics I (28 points)
Due Friday, April 3, in recitation
Write neat solutions for the problems below. Show all your work. If you only write the answer with no work, you will
n
New York University
Department of Economics
V31.0006
Mathematics for Economists
C. Wilson
March 27, 2012
Problem Set #7 Answer Key
1. Suppose the excess demand vector for goods 1 and 2 is given by the
New York University
Department of Economics
V31.0006
Mathematics for Economists
C. Wilson
April 4, 2012
Problem Set #8 Answer Key
1. Write down the symmetric matrix that corresponds to each of the fol
New York University
Department of Economics
ECON-UA 6
Mathematics for Economists
C. Wilson
April 19, 2012
Problem Set #10 Answer Key
1. Consider the function f : R2 R dened by
f (x1 , x2 ) = x2 x1 (1
Assignment 5, Math for Economics I (28 points)
Due Friday, March 13, in recitation
1. (2 points) Find f (x) if f (x) = (3x2 + 2)135 .
Solution: Our function is u135 where u = 3x2 + 2. Thus,
f (x) = 13
Assignment 4, Math for Economics I (28 points)
Due Friday, February 27, in recitation
Write neat solutions for the problems below. Show all your work. If you only write the answer with no work, you wi
New York University
Department of Economics
V31.0006
Mathematics for Economists
C. Wilson
March 7, 2012
Problem Set #6 Answer Key
1. Consider the following matrices:
3 2 2
A=
10 3
B=
3 1
1 4
Compute t
New York University
Department of Economics
V31.0006
Mathematics for Economists
C. Wilson
February 28, 2012
Problem Set #5 Answer Key
1. Express the vector (3, 2) as a linear combination of vectors (1
New York University
Department of Economics
ECON-UA 6
Mathematics for Economists
C. Wilson
May 15, 2012
Spring 2012 Final Exam Answer Key
1. (4) Write your name on the cover of each exam booklet you s
New York University
Department of Economics
ECON-UA 6
Mathematics for Economists
C. Wilson
May 15, 2012
Spring 2012 Final Exam
1. (4) Write your name on the cover of each exam booklet you submit. Begi
New York University
Department of Economics
V31.0006
Mathematics for Economists
C. Wilson
April 4, 2012
Spring 2011 Midterm II Answer Key
The value of each question is given in the parenthesis.
1. (4)
New York University
Department of Economics
V31.0006
Mathematics for Economists
C. Wilson
February 23, 2012
Spring 2011 MidTerm Exam I Answer Key
1. (6) Write your name and a 4-digit ID on the cover o
New York University
Department of Economics
V31.0006
Mathematics for Economists
C. Wilson
March 1, 2011
Spring 2011 MidTerm Exam I
1. (6) Write your name and a 4-digit ID on the cover of two exam book
New York University
Department of Economics
V31.0006
Mathematics for Economists
C. Wilson
May 17, 2011
Spring 2011 Final Exam
The value of each question is given in the parenthesis.
1. (5) Write your
New York University
Department of Economics
V31.0006
Mathematics for Economists
C. Wilson
April 2, 2012
Spring 2010 Midterm II Answer Key
The value of each question is given in the parenthesis.
1. (4)
New York University
Department of Economics
V31.0006
Mathematics for Economists
C. Wilson
April 1, 2010
Spring 2010 Midterm II
The value of each question is given in the parenthesis.
1. (4) Write your
New York University
Department of Economics
ECON-UA 6
Mathematics for Economists
C. Wilson
February 23, 2012
Spring 2012 MidTerm Exam I
The value of each question is given in the parenthesis.
1. (5) W