Use truth trees to determine whether the following symbolized arguments are valid or invalid. 1. P<->~N II NVP 2. -(G&M), Mv~G II ~G 3. K<->-L, ~L&~K II K->L 4. Z II E->(Z->E) (For some reason, students find this one difficult. "Z" is the premise. Don't be fooled. This IS a tree that does not branch. It is a stalk, a demon stalk. 5. C<->D, Ev-D II E->C 6. A<->(BvC), ~CvB II A->B 7. J-> (K->L), K->(J->L) II (JvK)->L 8. -(K<->S), S->~(RvK) II Rv~S 9. E->(F&G), F->(G->H) II E->H .0. A->(NvQ), ~(Nv~A) II A->Q

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Use truth trees to determine whether the following symbolized arguments are valid or invalid.
1. P<->~N II NvP
2. ~(G&M), Mv~G II ~G
3. K<->~L, ~L&~K II K->L
4. Z II E->(Z->E) (For some reason, students find this one difficult. "Z" is the premise. Don't be fooled. This IS a tree
that does not branch. It is a stalk, a demon stalk.
5. C<->D, Ev-D II E->C
6. A<->(BvC), ~CvB II A->B
7. J-> (K->L), K->(J->L) II (JvK)->L
8. -(K<->S), S->~(RvK) II Rv~S
9. E->(F&G), F->(G->H) II E->H
.0. A->(NvQ), ~(Nv~A) II A->Q
Transcribed Image Text:Use truth trees to determine whether the following symbolized arguments are valid or invalid. 1. P<->~N II NvP 2. ~(G&M), Mv~G II ~G 3. K<->~L, ~L&~K II K->L 4. Z II E->(Z->E) (For some reason, students find this one difficult. "Z" is the premise. Don't be fooled. This IS a tree that does not branch. It is a stalk, a demon stalk. 5. C<->D, Ev-D II E->C 6. A<->(BvC), ~CvB II A->B 7. J-> (K->L), K->(J->L) II (JvK)->L 8. -(K<->S), S->~(RvK) II Rv~S 9. E->(F&G), F->(G->H) II E->H .0. A->(NvQ), ~(Nv~A) II A->Q
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