Justify each step in the following proof sequence of(ax)[P(x) → Q(x)] → [(7x)P(x) →Ax)Q)]1. (Ax)[P(x) → Q(x)]2. P(a) → Q(a)3. (Vx)P(x)4. P(a)5. Q(a)6. (Ix)Q(x)

The step number 1 (∃x)[P(x) → Q(x)] is the premise. It is a valid step. The step number 2 in the…

Answered: Justify each step in the following…

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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Justify each step in the following proof sequence of (ax)[P(x) → Q(x)] → [(7x)P(x) →Ax)Q)] 1. (Ax)[P(x) → Q(x)] 2. P(a) → Q(a) 3. (Vx)P(x) 4. P(a) 5. Q(a) 6. (Ix)Q(x)