Top Posters
Since Sunday
19
9
o
6
m
6
J
5
C
4
t
4
s
4
a
4
C
4
d
4
z
4
New Topic  
blankship blankship
wrote...
Posts: 22
Rep: 0 0
A month ago
Consider this proof, (1.) E • [ ~ I • (~ D v I)]  /∴ ~ D v F (2.) [ ~ I • (~ D v I)] • E (3.( ~ I • (~ D v I) (4.) ~ I (5.) (~ D v I) • ~ I (6.) ~ D v I (7.) ~ D (8.) ~ D v F What is the justification for line 4?

▸ 1 Simp

▸ 3, 2 Cond

▸ 3 Simp
Textbook 

How to Think Logically


Edition: 2nd
Authors:
Read 8 times
1 Reply
Replies
Answer verified by a subject expert
AdieMichelleAdieMichelle
wrote...
Posts: 19
Rep: 0 0
A month ago
Sign in or Sign up in seconds to unlock everything for free
More questions for this book are available here
3 Simp

1

Related Topics

wrote...
Posts: 22
Credits: 25

A month ago
Thanks
wrote...
Posts: 84
Credits: 40

Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
wrote...
Posts: 146
Credits: 175

2 hours ago
Thanks for your help!!
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  52 People Browsing
 217 Signed Up Today
Related Images
 40
 51
 47
Your Opinion
Which 'study break' activity do you find most distracting?
Votes: 289

Previous poll results: Do you believe in global warming?