Let W(x, y) mean that student x has visited website y, where the domain for x consists of all students in your school and the domain for y consists of all websites. Ex- press each of these statements by a simple English sen- tence. a) W(Sarah Smith, www.att.com) b) 3xW(x, www.imdb.org) c) 3yW(José Orez, y) d) 3y(W(Ashok Puri, y) A W(Cindy Yoon, y)) e) 3yz(y # (David Belcher) ^ (W(David Belcher, z) → W(y,z))) f) xyz((x+y) ^ (W(x, z) ↔ W(y, z)))
Let W(x, y) mean that student x has visited website y, where the domain for x consists of all students in your school and the domain for y consists of all websites. Ex- press each of these statements by a simple English sen- tence. a) W(Sarah Smith, www.att.com) b) 3xW(x, www.imdb.org) c) 3yW(José Orez, y) d) 3y(W(Ashok Puri, y) A W(Cindy Yoon, y)) e) 3yz(y # (David Belcher) ^ (W(David Belcher, z) → W(y,z))) f) xyz((x+y) ^ (W(x, z) ↔ W(y, z)))
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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Q5 part E F
Transcribed Image Text:5. Let W(x, y) mean that student x has visited website y,
where the domain for x consists of all students in your
school and the domain for y consists of all websites. Ex-
press each of these statements by a simple English sen-
tence.
a) W(Sarah Smith, www.att.com)
b) 3xW(x, www.imdb.org)
c) 3yW(José Orez, y)
d) Ey(W(Ashok Puri, y) A W(Cindy Yoon, y))
e) 3yVz(y # (David Belcher) ^ (W(David Belcher, z) →
W(y,z)))
f) 3x³yz((x) ^ (W(x,z) → W(y, z)))
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