DeVry PHIL347 Week 4 Homework Assignment Latest 2017 November

PHIL347

Week 4 Homework Assignment

Truth-Table Worksheet (graded, 60
points)

Part 1: 6
points

Part 2: 18 points

Part 3: 20 points

Part 4: 16 points

Total: 60 points

Part 1—Four Main Connectors (1.5
points× 4 = 6 total points)

Instructions

For the four main connectors, complete the
truth tables below.

·
For
the purposes of this document, we will use keys common on most computers.

·
The
tilde (~) remains the same, but andwill
be represented by &,or will be
represented by V, and If, then will be represented by >.

·
Use
capital Tfor true and capital F for false.

P	~ P

X	&	Y

X	V	Y

X	>	Y

Part 2—Simple Claims (3
points× 6 = 18 total points)

Instructions

The simple claims below are from the
textbook Exercise 7.6 (page 167).

·
Designate
a letter to represent each simple claim, and then translate the
truth-functional claims into symbolic forms.

·
Be
sure to provide a breakdown on which claims are represented by which letter.

Example: People often think that all claims are either facts or opinion.

Answer: FÚ O

F =People often think that all claims are facts.

O =People often think that all claims are opinions.

1.
If John continues to look haggard, then someone must arrange to take him
to the University Health Center to find out what is wrong.

Answer:

2. Kestrels are not common in this part of
the country.

Answer:

3.
All students on campus have access to either a desktop computer or
laptop computer.

Answer:

4. The movie is unsuitable for children unless it
has a G rating.

Answer:

5. Llamas
are South American ruminants, and bison are North American bovine mammals.

Answer:

6.
You can graduate from this university only if you pass the logical
reasoning class.

Answer:

Part 3—Identifying Operator Identification (4
points× 5 = 20 total points)

Instructions

From the textbook Exercise 7.11 (pages 170–171),
follow the directions for claims below.

·
Be
sure to identify the claims represented by the capital letters you have chosen
as well as the type of main operator (i.e. conjunction, disjunction, negation, or
conditional).

Example:You do not feel safe in the dark, yet your mission is to go into
that cave.

Answer: ~ S • M conjunction

S = You feel safe in the dark.

M = Your mission is to go into that cave.

1. It is not the case that my car will
start after a rainstorm only if I dry off the battery connections.

Answer:

2. You will not have a successful business
unless you hire hard-working employees.

Answer:

3. A
crocodile is neither in the yard nor in the house.

Answer:

4. Children are strong readers and have
good math skills only if they attend preschool.

Answer:

5.
If you finish all of your dinner, then you will not have room for
dessert.

Answer:

Part 4—Table Completion (4
points × 4 = 16 total points)

Instructions

From the textbook Exercise 7.20 (pages 181–182),
complete the truth tables for the following arguments, and state if they are
valid or invalid.

·
If
invalid, be sure to highlight the line demonstrating that fact.

·
The
two columns to the left in red are there to help you make sure you are applying
all values properly.

1.
M
>K

M

K

The argument is _____. (Valid or invalid)

M	K	M	>	K	/	M	//	K
T	T
T	F
F	T
F	F

2.
P > Q

Q

P

The argument is _____.

P	Q	P	>	Q	/	Q	//	P
T	T
T	F
F	T
F	F

3. Q

P > Q

P

The argument is _____.

Q	P	Q	/	P	>	Q	//	P
T	T
T	F
F	T
F	F

4. A
V B

~ B

A

The argument is _____.

A	B	A	V	B	/	~	B	//	A
T	T
T	F
F	T
F	F

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