9. Use De Morgan's Laws, and any other logical equivalence facts you know to simplify the following statements. Show all your steps. Your final statements should have negations only appear directly next to the sentence variables or predicates (P, Q. E(r). etc.), and no double negations. It would be a good idea to use only conjunctions, disjunctions, and negations. a. -((-PAQ) V ¬(RV-S). b. -(-P-Q)^ (-Q → R)) (careful with the implications). C. For both parts above, verify your answers are correct using truth tables. That is, use a truth table to check that the given statement and your proposed simplification are actually logically equivalent.
9. Use De Morgan's Laws, and any other logical equivalence facts you know to simplify the following statements. Show all your steps. Your final statements should have negations only appear directly next to the sentence variables or predicates (P, Q. E(r). etc.), and no double negations. It would be a good idea to use only conjunctions, disjunctions, and negations. a. -((-PAQ) V ¬(RV-S). b. -(-P-Q)^ (-Q → R)) (careful with the implications). C. For both parts above, verify your answers are correct using truth tables. That is, use a truth table to check that the given statement and your proposed simplification are actually logically equivalent.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:9. Use De Morgan's Laws, and any other logical equivalence facts you know to
simplify the following statements. Show all your steps. Your final statements
should have negations only appear directly next to the sentence variables or
predicates (P, Q. E(r). etc.), and no double negations. It would be a good idea to
use only conjunctions, disjunctions, and negations.
a. -((-PAQ) V ¬(RV-S).
b. -(-P-Q)^ (-Q → R)) (careful with the implications).
C. For both parts above, verify your answers are correct using truth tables.
That is, use a truth table to check that the given statement and your
proposed simplification are actually logically equivalent.
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