2. Let A(x) be the statement "x has apples," C(x) be the statement "x has cherries," and B(x, y) be the statement "x is better than y," where the domain of x and y consists of all pies. Which logical expression corresponds to the following statement? "There is some pie that has apples that is better than every pie that has cherries." a. ‡xVy(A(x) ^ (C(y) → B (x, y))) b. xvy(A(x) ^ C(y) ^ B (x, y)) c. 3xVy((A(x) ^ C(y)) → B (x, y)) d. 3xVy(A(x) → (C(y) ^ B (x, y)))

2. Let A(x) be the statement "x has apples," C(x) be the statement "x has cherries," and B(x, y) be the statement "x is better than y," where the domain of x and y consists of all pies. Which logical expression corresponds to the following statement? "There is some pie that has apples that is better than every pie that has cherries." a. ‡xVy(A(x) ^ (C(y) → B (x, y))) b. xvy(A(x) ^ C(y) ^ B (x, y)) c. 3xVy((A(x) ^ C(y)) → B (x, y)) d. 3xVy(A(x) → (C(y) ^ B (x, y)))

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

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