Math 1090.04 Homework 05
Spring 2013
Student ID Number:
Name
Instructions:
Each student is expected to follow the Homework Guidelines
described on the course webpage
• Solve the Part A Problems on your own paper.
• Solve the Part B problems in this handout.
• Attach this handout to the front of your homework assignment
Reading Assignment:
• Chapter 2.1 - Text pages 89 - 93
• Chapter 2.2 - Text pages 97 103
• Chapter 2.3 - Text pages 107 - 115
Part A:
• Chapter 2.1 - Text pages: 94-96
Problems: All
• Chapter 2.2 - Text pages: 104-106
Problems: All
• Chapter 2.3 - Text pages 116-118
Problems: 1-4, 5-37 odds
Special Instructions: For 5-37 odds complete the following:
– Write the system of equations in matrix form
– Write the augmented matrix for this system
– Find the solution using Gauss-Jordan Elimination - indicate each step using the
“R” notation
– Check you work using matrix multiplication
Math1090.004
Homework 05, Page 2 of 7
13 February 2013
DO NOT WRITE IN THIS TABLE!!!
(It is for grading purposes.)
Quantity of Completed Homework Problems:
Grade: Homework
Quiz
Review Questions:
1. Add or subtract terms whenever possible:
√
√
(a) 7 3 + 6 3
√
√
(b) 8 5 + 11 5
√
√
(c) 6 17x − 8 17x
√
√
(d) 4 13x − 6 13x
(e)
√
√
8+3 2
out of 47
Math1090.004
(f)
(g)
(h)
√
√
√
Homework 05, Page 3 of 7
√
20 + 6 5
50x −
√
8x
63x −
√
28x
√
√
(i) 3 18 + 5 50
√
√
(j) 4 12 − 2 75
13 February 2013
Math1090.004
Homework 05, Page 4 of 7
2. Rationalize the denominator:
(a)
√1
7
(b)
√2
10
(c)
√
√2
5
(d)
√
√7
3
(e)
13
√
3+ 11
13 February 2013
Math1090.004
(f)
3√
3+ 7
(g)
√7
5−2
(h)
√5
3−1
(i)
√ 6√
5+ 3
(j)
√ 11√
7− 3
Homework 05, Page 5 of 7
13 February 2013
Math1090.004
Homework 05, Page 6 of 7
13 February 2013
Chapter 2: Matrices
3. Given:


x + z = 8
x + y + 2z = 17

x + 2y + z = 16
(1)
(2)
(3)
(a) Write the system of equations in matrix form
(b) Write the augmented matrix for this system
(c) Find the solution using Gauss-Jordan Elimination - indicate each step using the
“R” notation
Math1090.004
Homework 05, Page 7 of 7
(d) Check you work using matrix multiplication
13 February 2013