University of Illinois at 
Urbana-Champaign

Math 181. A Mathematical World
Section X1 - CRN 49146
Fall 2009

Instructor: Zoi Rapti
323 Illini Hall
Phone: (217) 333-6625
Email: zrapti@illinois.edu
Mail Box: in room 250 Altgeld Hall

Instructor's Office Hours: MWF 11:00AM-12:00 PM.

Section X1 meets: MWF 12:00-12:50 PM in 140 Henry Administration Building.

Textbook
"For All Practical Purposes: Introduction to Contemporary Mathematics", 7th ed., W.H. Freeman and Company, NY, NY, 2000, ISBN 0-7167-4783-9.

Course Description
Introduction to selected areas of mathematical sciences through application to modeling and solution of problems involving networks, circuits, trees, game theory, encoding, symmetry and tilings, and geometric growth. The material will be taken from units I through VI in the text.

Prerequisite
Three years of high school mathematics, including two years of algebra and one year of geometry.

Make-Up Policy

Grading Policy
Your grade will be based on homework, quizzes, three hour exams and the final exam. Your work should be readable and organized. All work must be shown-a bare answer is not enough.
Homework
Quizzes
Hour Exams
Final Exam
10%
15%
45%, (15% each)
30%

Scale
A > = 90%
B 80-89%
C 70-79%
D 60-69%
F < 60%

Exams
Exam 1: 12:00-12:50 PM, Friday, September 25, Room 140 HAB.
Exam 2: 12:00-12:50 PM, Friday, October 30, Room 140 HAB.
Exam 3: 12:00-12:50 PM, Friday, December 4, Room 140 HAB.
Final Exam: 7:00-10:00 PM, Tuesday, December 15, Room 140 HAB.

Quizzes
A short quiz will be given weekly- unless an exam is scheduled for that week. The lowest quiz score will be dropped at the end of the semester.

Homework
A number of problems will be assigned each week to be handed in. No late homework will be collected or graded. At the end of the semester the two lowest homework scores will be dropped. You should submit your homework in class. However, if you miss a class, but want to hand in your homework, you must put it in my mailbox by 1:00 PM on the due date.

Assignments
HW assignment 1: problems 7, 12, 21, 24, pages 25-33. Due Date: 08/28/09.
HW assignment 2: problems 34, 43, 44, 47, 50, pages 25-33. Due Date: 09/04/09.
HW assignment 3: problems 6b, 17a, 24, 26, 33, pages 64-77. Due Date: 09/11/09.
HW assignment 4: problems 40, 44, 51d, 54, 68b, 69a, pages 64-77. Due Date: 09/18/09.
HW assignment 5: problems 5, 9, 19, pages 110-122. Due Date: 09/25/09.
HW assignment 6: problems 29, 37 a, b and c, 46, 58 a and d, 64a, 67, 76 pages 110-122. Due Date: 10/09/09.
HW assignment 7: problems 4, 7, 14, 18 and 20, pages 696-705. Due Date: 10/16/09.
HW assignment 8: problems 24, 25, 33, 39 and 40, pages 696-705. Due Date: 10/23/09.
HW assignment 9: problems 4, 13, 19, 21 and 26, pages 743-752. Due Date: 11/06/09.
HW assignment 10: problems 27, 28, 31, and 34, pages 743-752. Due Date: 11/13/09.
HW assignment 11: problems 35, 40, and 51, pages 743-752. Due Date: 11/20/09.
HW assignment 12: problems 53, 59, and 63, pages 743-752. Due Date: 11/30/09.

Scores
To check your scores click here and then select 'Score reports'.

Other Announcements
The textbook is on reserve in the Mathematics Library in Altgeld Hall.
Please staple your hw if it consists of more than one sheet of paper. The grader is not responsible for any lost sheets.
In case you need a tutor, please visit the official site for Tutoring Services of the Department of Mathematics.

Bonus Material
Fleury's Algorithm for Finding Euler Circuits
Chromatic Numbers of Various Graphs