Pop Quiz 2
CIS 275
Name:
Points: 1 2 3
Consider the following claim:
If w is deltic and t blimets w, then t is quibic.
Note: You do not need to prove the claim, which means you also do
not need to wor
Assignment 4: Sample Solutions
CIS 275 Intro to Discrete Mathematics
Exercises
1. (10 points) Use a direct proof to prove the following statement1 :
Let A, B, C be sets. If A B and A C, then A B C.
Pr
Assignment 1
CIS 275 Intro to Discrete Mathematics
Logistics
This assignment covers material from Section 7 of Scheinermans Mathematics: A Discrete Introduction (MDI).
This homework is officially due
CIS 275: In-class Activity
1
2
3
14 October 2014
Name :
Consider the following claim:
Let x, y, z be integers. If x is a bantor and y claibors (x z), then y filters z.
Note: I am not asking you to pro
CIS 275: In-class Activity (Sample Solutions)
Name #1:
21 October 2014
Name #2:
Claim: Let f : A B and g : B C be functions. If f and g are both onto, then g f is
also onto.
Proof: (direct)
Suppose th
CIS 275: In-class Activity
Name #1:
1
2
3
Name #2:
Claim: Let k be an integer. Then 0|k if and only if k = 0.
Proof:
Suppose that
It suffices to prove two subclaims:
:
:
To prove : (direct)
To prove :
CIS 275: In-class Activity
Name #1:
1
2
3
21 October 2014
Name #2:
Claim: Let f : A B and g : B C be functions. If f and g are both onto, then g f is
also onto.
Proof: (direct)
Suppose that
[Need to s
WRT 205: Unit 2 Calendar
Willis
Date
Thurs,
Feb. 5
Primary Research: Gender & Pop Consumer Culture
In-class Topics and Activities
Homework (due the following
class)
Choose either a representative
Intr
WRT 205: Unit 1 Calendar
Gender & Pop Consumer Culture
Date
WEEK
ONE:
Tues,
Jan.13
In-class Topics and
Activities
Introduction to the course,
the inquiry, and the unit 1
assignment. We will
review, de
Should Companies Obey the Law If Breaking It Is More
Profitable?
Huffington Post
July 5, 2012
When a large corporation gets caught breaking the law, the costs can be severe - for the
firm if it's sanc
For BP, Failure Was the Only Option
By Dana Radcliffe
FoxNews.com
July 28, 2010
On Day 100 of the Gulf catastrophe and one day after a rig accident caused yet
another oil leak in Gulf waters its worth
What Do I Owe?
Dana Radcliffe
If I borrow $20 from you, then I owe you $20. If I recruit you for a lab experiment, I owe
you an explanation of the risks. If you are an investor in my business, I owe y
ECS 392
Spring 2015
FINAL PROJECT
(Details)
Date due: Monday, May 4 (at 10:00 pm, via Turnitin)
Length: 1.5 to 2.0 pages, single-spaced, normal margins.
Topic: This is a case analysis. Select a case o
Consumerism and Identity: Some Psychoanalytic Considerations
To what extent buying is effective in enlarging or building identities cannot be known
for sure. However, it seems to me that the identity-
In-Class Exercise
Class 3: 16 January 2015
Problem Description
You are an emergency 911 operator. You receive a distress call from Alice on her cell phone, which has
an emergency GPS locator. Your GPS
Ethical Leadership and the Psychology of Decision Making
Messick, David M;Bazerman, Max H
MIT Sloan Management Review; Winter 1996; 37, 2; ProQuest
pg. 9
Reproduced with permission of the copyright ow
Assignment 2: Sample Solutions
CIS 275 Intro to Discrete Mathematics
Note: Answers appear in red. Grading notes appear in blue.
Each of the proofs (i.e., questions 25) is worth 10 points. See the grad
CIS 275: In-class Activity (Sample Solutions)
Name #1:
9 September 2014
Name #2:
Claim: Let k be an integer. Then 0|k if and only if k = 0.
Proof:
Suppose that k is an integer.
It suffices to prove tw
CIS 275: In-class Activity (Sample Solutions)
Name #1:
7 October 2014
Name #2:
For each proof fragment below, (i) expand out the need to show component with the appropriate
definition and (ii) fill in
CIS 275 Assignment Cover Sheet
Name:
Assignment #
Section (please circle):
M001
(TuTh 2-3:20pm)
M004
(TuTh 11-12:20pm)
Yes
No
Did you consult with anyone (excluding the course instructor or tas/grader
CIS 275: In-class Activity
Name #1:
1
2
3
7 October 2014
Name #2:
For each proof fragment below, (i) expand out the need to show component with the appropriate
definition and (ii) fill in the consider
CIS 275: In-class Activity (Sample Solutions)
Name #1:
18 September 2014
Name #2:
Claim: Let A and B be sets. If A B, then 2A 2B .
Proof: (direct)
Suppose that A B.
[Need to show: 2A 2B , which means
Your Turn
Definition: Let a and b be integers. We say that a is divisible by b (also:
b divides a, or b is a factor of a, or b is a divisor of a)
provided there is an integer c such that bc = a.
We wr
CIS 275: In-class Activity (Sample Solutions)
14 October 2014
Name :
Consider the following claim:
Let x, y, z be integers. If x is a bantor and y claibors (x z), then y filters z.
Note: I am not aski
CIS 275: In-class Activity (Sample Solutions)
30 September 2014
Name:
Let U be the set cfw_2, 5, 9.
Define nonempty relations S1 , S2 , S3 U U to satisfy the following constraints:
1. S1 is both symme
Your Turn
Definition: Let a and b be integers. We say that a is divisible by b (also:
b divides a, or b is a factor of a, or b is a divisor of a)
provided there is an integer c such that bc = a.
We wr