2.6 Exercises1. Show that the following formulas are tautologies:(a) (AMB),¬AV¬B(b) A⇒B¬B⇒¬A(c) ((A⇒B)^(B⇒A)) ⇒(A⇒B)(d) (AVB)^(¬BVC) ⇒ (AVC)2. Transform the following formulas into conjunctive normal form:(a) A B(b) AAB AVB(c) A^ (A⇒B) ⇒B

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2.6 Exercises 1. Show that the following formulas are tautologies: (a) (AAB),¬AV¬B (b) A⇒B-B⇒¬A (c) ((A⇒B) A (B⇒A)) ⇒ (A⇒B) (d) (AVB)^(-BVC) ⇒ (AVC)

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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Bare bones programming language

Bare bones programming language is a low-level programming language that gives a detailed stepwise description of a program. It has a tight program design and in-depth understanding of the toolchain. It is based on the target environment and is used for safe coding practices. C programming language is a type of bare bones programming language.

Question

2.6 Exercises
1. Show that the following formulas are tautologies:
(a) (AMB),¬AV¬B
(b) A⇒B¬B⇒¬A
(c) ((A⇒B)^(B⇒A)) ⇒(A⇒B)
(d) (AVB)^(¬BVC) ⇒ (AVC)
2. Transform the following formulas into conjunctive normal form:
(a) A B
(b) AAB AVB
(c) A^ (A⇒B) ⇒B

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