1. Find an assignment v : {p,q,r, 8, t, u} → formula (t → q)^ (u → p) ^ (T → s) ^ (t ^q → r) ^ (s → t) ^ (u ^ p 1). {0, 1} satisfying the ->
1. Find an assignment v : {p,q,r, 8, t, u} → formula (t → q)^ (u → p) ^ (T → s) ^ (t ^q → r) ^ (s → t) ^ (u ^ p 1). {0, 1} satisfying the ->
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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Question
![Find an assignment v : {p, q, r, s, t, u} → {0,1} satisfying the
formula (t→q) A (u → p) ^ (T→ s)^(tnq→r)^(s-→t) ^ (u ^p→1).
1.
2.
Show that the set {→, 1} is an adequate set for propositional logic
by expressing ¬ø, ø V ý, and o A in terms of →, 1, 6, and y.
Show by mathematical induction that, for all n20, the equality
-...+ * = 2 - n+2 holds.
3.
第+号++
2
4.
Compute a conjunctive normal form of -((pV(qA-r)) → (r^¬p))
using its truth table.
5.
Prove the semantic equivalence p Aq r = p qr using
natural deduction.
6.
Prove -(p q) V (r ^¬s),¬p E¬(r → s) using natural deduction.
7.
State the proof rule for =-elimination.
Use semantic tableaux, to prove or find a counterexample for the
syllogism Vr(P(x) Q(x)), 3x(P(x) ^¬R(x)) -3(Q(x) A R(x)).
9. Let f be a unary function symbol. Prove by natural deduction that
involutions are injective: Vr(f(f(x))= x) E (f(x) = f(y) → x = y).
%3D](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe091d9c3-534e-4677-aae5-dc3ff5e09b7a%2F7dd84e3a-080d-418e-a999-ecb93ec9a1da%2Fkyivd8b_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Find an assignment v : {p, q, r, s, t, u} → {0,1} satisfying the
formula (t→q) A (u → p) ^ (T→ s)^(tnq→r)^(s-→t) ^ (u ^p→1).
1.
2.
Show that the set {→, 1} is an adequate set for propositional logic
by expressing ¬ø, ø V ý, and o A in terms of →, 1, 6, and y.
Show by mathematical induction that, for all n20, the equality
-...+ * = 2 - n+2 holds.
3.
第+号++
2
4.
Compute a conjunctive normal form of -((pV(qA-r)) → (r^¬p))
using its truth table.
5.
Prove the semantic equivalence p Aq r = p qr using
natural deduction.
6.
Prove -(p q) V (r ^¬s),¬p E¬(r → s) using natural deduction.
7.
State the proof rule for =-elimination.
Use semantic tableaux, to prove or find a counterexample for the
syllogism Vr(P(x) Q(x)), 3x(P(x) ^¬R(x)) -3(Q(x) A R(x)).
9. Let f be a unary function symbol. Prove by natural deduction that
involutions are injective: Vr(f(f(x))= x) E (f(x) = f(y) → x = y).
%3D
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