Top Posters
Since Sunday
5
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
Home Q & A Board Humanities Religion and Philosophy
New Topic  
johndoris johndoris
wrote...
Go to Answer
Posts: 140
Rep: 0 0
A year ago
Consider this proof, (1.) E • D (2.) ~ (E • D) ≡ O/∴ Ev~O (3.) [~ (E • D) ⊃ O] • [O ⊃ ~ (E • D)] (4.) [O ⊃ ~(E•D)]• [~(E•D) ⊃ O] (5.) O ⊃ ~ (E • D) (6.) ~ ~ (E • D) (7.) ~ O (8.) ~ O v E (9.) E v ~ O What is the justification for line 4?

▸ 3 Simp

▸ 3 Com

▸ 3, 2 HS
Textbook 
How to Think Logically

How to Think Logically


Edition: 2nd
Authors:
Read 59 times
1 Reply
Replies
Answer verified by a subject expert
ssong07ssong07
wrote...
#1
Posts: 114
Rep: 0 0
A year ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

johndoris Author
wrote...

A year ago
You make an excellent tutor!
lipop
wrote...

Yesterday
Thanks
gage
wrote...

2 hours ago
This helped my grade so much Perfect
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1235 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 127
  
 191
  
 279
Your Opinion
Previous poll results: Who's your favorite biologist?