4. Prove the validity of the following sequents. Both predicates P and Q have arity 1 and S has arity 0. a. VxP(x)-S+ 3x(P(x)→S) b. Vx(P(x) A Q(x))+xP(x)\xQ(x)
4. Prove the validity of the following sequents. Both predicates P and Q have arity 1 and S has arity 0. a. VxP(x)-S+ 3x(P(x)→S) b. Vx(P(x) A Q(x))+xP(x)\xQ(x)
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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Can anyone please help me question 4 please ? I am stuck on it
Transcribed Image Text:$: Ex\P\y,z) \ v } \
4. Prove the validity of the following sequents. Both predicates P and Q have arity 1 and S has arity
0.
a. VxP(x) + 3x(P(x)→S)
b. x(P(x)
Q(x))X(X) X(X)
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