Last Name: First Name: Section (circle): 1:MWF 2:TuTh
CS 160 Spring 2009: Homework Assignment 2 โ Sets and Functions
Due: 11AM Friday February 6, 2009
Turn in hardcopy of your solutions in class, or slide it under your instructorโs office door by the deadline.
(Sec. 1 MW - Liz Boese: 242 CS Bldg., Sec. 2 TTh - Jim Bieman: 462 CS Bldg.)
Do all nine (9) problems. Print this out on one sheet of two-sided paper and put your answers in the space
provided after each problem.
1. Use set builder notation to give a description of the following set:
๎
6, 7, 8, 9, 10
๎
.
2. Suppose that A =
๎
3, 5, 7
๎
, B =
๎
3, 7
๎
, C =
๎
5, 7
๎
, and D =
๎
5, 7, 9
๎
. Which of these sets are proper subsets of
which other sets?
3. Use a single Venn diagram to illustrate the relationships X
๎
Yand Y
๎
Z.
4. Let A=
๎
x, y, z
๎
,B=
๎
0, 1
๎
, and C=
๎
a, b
๎
. Show the result of B
๎
A
๎
C.
5. Let A=
๎
1, 2, 3, 4, 5
๎
and B=
๎
1, 2, 3, 4, 5, 6, 7, 8
๎
. Write out the following sets:
(a) A
๎
B
(b) A
๎
B
(c) A
๎
B
(d) B
๎
A
Your eName: ____________________
