D117 - Matrices and Systems of Equations
Using row operations, simplify the following augmented matrices into equivalent, reduced matrices. Be sure to show all of your steps, and indicate which
row operation is used in each step.
1 1 2 7
1 0 0 3
1. 1 2 1
Teds Toys manufactures toy dolls and soldiers out
of plastic and cloth. Each doll takes 8 ounces of
plastic and 19 square inches of cloth, while each
soldier requires 11 ounces of plastic and 15 square
inches of cloth. Ted has 40 pounds of plastic and
100
Correct answers are shown in red
1)
A feasible set is defined by the inequalities
x 0, y 0, y 5 x 5, y x 3
How many corner points does this feasible set have?
A) 0
B) 1
C) 2
D) 3
G) 6
H) 7
I) 8
J) 9
M) 12
N) None of these
E) 4
K) 10
2)
Consider the inequa
D117
Study guide for Exam II
The problems on exam II will be close replicas of problems in the WeBWorK and in the
textbook. Study the following list of exercises. No calculator is allowed on the exam so
the level of the arithmetic will be elementary. Neve
DNE is used here for does not exist.
1.
10.
[3 points] Find the slope of the line 2$y :
3.
[3 points] Find the slope of the line 3m : 5.
[3 points] Find the mintercept of the line
2m + 33/ = 4.
. [4 points] Sketch the graph of the line 3m +
53/ = 1
Name: Spring 2005 {
Time:
Finite Chapter 6
1. [5 points each] Dene matrices A, B, C, and D as follows.
1 1
3 0 1 0 l
1441 21,84 21,0[3 3]»
H
H
O
Compute the following, showing work. If the expression is undened, just say so.
(a) BA~3C undened.
D117 - Matrices and Row Operations
Using row operations, simplify the following augmented matrices into equivalent, reduced matrices. Be sure to show all of your steps, and indicate which
row operation is used in each step.
1.
2.
3.
1 1 3
3 1 1
1 0 1
0 1
D117 - Matrices and Row Operations
Using row operations, simplify the following augmented matrices into equivalent, reduced matrices. Be sure to show all of your steps, and indicate which
row operation is used in each step.
1.
2.
3.
1 1 3
3 1 1
1 1 1
2 1
D117 - Matrices and Systems of Equations
Using row operations, simplify the following augmented matrices into equivalent, reduced matrices. Be sure to show all of your steps, and indicate which
row operation is used in each step.
1 1 2 7
1 0 0 3
1. 1 2 1
D117
Fall 2014
General Information:
Visit http:/mypage.iu.edu/~gkattner to find the class schedule, this syllabus, and
sample exams.
Instructor:
Office:
Office hours
Phone:
E-mail:
William Tune
SE 223
MWF 1 2pm
6-1984
wtune@indiana.edu
D117 sections meeti