a) ((\x) (f(x) < 7)[x = 7] b) ((Vy)(f(x) < 7)[x = 7] [(2'^)b =: 2](((^'x)b> (L)J) (^A) (XA)) (³
a) ((\x) (f(x) < 7)[x = 7] b) ((Vy)(f(x) < 7)[x = 7] [(2'^)b =: 2](((^'x)b> (L)J) (^A) (XA)) (³
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
Problem 1PE
Related questions
Question
![3.
Find the results of the following substitutions. Just give the answer and explain the
reasons if the result is undefined:
a) ((\x)(ƒ(x) < 7)[x := 7]
b) ((\y)(f(x) < 7)[x := 7]
c) ((\x)(\y)(ƒ(7) < g(x, y)))[z := g(y, 7)]
d) ((\x)(\y)(ƒ(z) < g(x, y)))[z := g(y, 7)]
e) ((\x)(\y)(\z)(ƒ(z) < g(x, y)))[z := g(y, 7)]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6c803f28-d355-4a7f-8b24-1cdd50e60256%2F897d1d53-9f5e-4a36-bbde-3f0b07710d54%2Fc96z8al_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3.
Find the results of the following substitutions. Just give the answer and explain the
reasons if the result is undefined:
a) ((\x)(ƒ(x) < 7)[x := 7]
b) ((\y)(f(x) < 7)[x := 7]
c) ((\x)(\y)(ƒ(7) < g(x, y)))[z := g(y, 7)]
d) ((\x)(\y)(ƒ(z) < g(x, y)))[z := g(y, 7)]
e) ((\x)(\y)(\z)(ƒ(z) < g(x, y)))[z := g(y, 7)]
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