Symbolic Logic including constructing proofs using various rules

I need the entire worksheet completed, it is for a homework assignment. There has been a tutor already that has completed this work on studypool but the work is done poorly and is also wrong. I need this to be done correctly as it is a homework assignment. I am having trouble completeing it and need it for tomorrow by 11.

Unformatted Attachment Preview

Don't use plagiarized sources. Get Your Custom Essay on
Symbolic Logic including constructing proofs using various rules
Just from $13/Page
Order Essay

PHIL111 – 940 – ASSIGNMENT #4 (Units 8-9)
[total =10 marks + 3 marks extra credit!]
1. Construct proofs for the following, without using C.P. or I.P. (= Unit 8) [1
mark each].
a. S = ~ (D Ú C), (S . (T ? W)), ~ (~ Y ? W), ~ B = ~ (C Ú T)
/ ~ (B Ú Y)
b. (A . F) ? (C Ú G), ~ (C Ú (F . G)), F = ~ (X . Y), ~ (X Ú ~ W)
/ ~ (A Ú X)
c. Q = ~ (A Ú B), P ? ~ (Q Ú ~ T), ~ (S ? ~ W), (Q ? X) ? ~ (S . W)
/ ~ (P Ú B) . ~ (X v A)
[Extra credit]
d. (W Ú T) ? ~ A, ~ (X ? S), ~ (T Ú S) ? ~ X, C ? (P . S),
(D ? (C . E)) = X / ~ ((C v D) Ú (A v S))
2. Use C.P. or I.P. or both to construct proofs for the following (= Unit 9) [1
mark each].
a. A ? (B Ú C), C = (E . F), ~ (F Ú B) / ~ A
b. A ? ~ (X . Y), B = (D Ú ~ F), ~ (D Ú W), F = ~ Y / (A . B) ? ~ X
c. ~ A ? (E ? (B Ú C)), S = ~ (D Ú C), T ? (S . ~ B), ~ A Ú C
/ T ? ~ (D Ú E)
[Extra credit]
d. (~ C . (F Ú E)) Ú (C . ~ (F Ú E)), F ? ~ B, (A ? ~ C) = ~ (X ? E)
/ B ? C
3. Construct proofs for the following theorems (= Unit 9) [1 mark each].
a. (~ (p . q) = (s Ú r)) ? (~ (p ? ~ s) ? ~ q)
b. p = (p . (q Ú ~ q))
c. ((p ? q) . (q ? r)) Ú (r ? p)
[Extra credit]
d. ((p Ú q) ? (r . ~ s)) ? (s ? ((t . w) ? ~ p))
4. Symbolise and construct proof for the following argument, providing
the dictionary for each (fully-written) simple sentence. No abbreviations
for simple sentences will be accepted! [1 mark].
If the cat is ill, either she was fighting or ate too many mice. She was
fighting only if she was attacked, and she was attacked only if either
the large Siamese or the small Beagle was out. The large Siamese
was out only if it was sunny, and the small Beagle was out only if it
was warm. It was neither warm nor sunny, but the cat is ill. Therefore,
she ate too many mice.

Purchase answer to see full

Order a unique copy of this paper
(550 words)

Approximate price: $22

Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
The price is based on these factors:
Academic level
Number of pages

Order your essay today and save 15% with the discount code ESSAYHELP