1. (a) Prove the zero theorem x + 1 = 1 with Boolean algebra. Give a reason for each step our proof. Hint: Expand the 1 on the left with the complement property and then use the dempotent property. (b) Show the dual proof of part (a).

1. (a) Prove the zero theorem x + 1 = 1 with Boolean algebra. Give a reason for each step our proof. Hint: Expand the 1 on the left with the complement property and then use the dempotent property. (b) Show the dual proof of part (a).

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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Question

*1. (a) Prove the zero theorem x + 1 = 1 with Boolean algebra. Give a reason for each step
your proof. Hint: Expand the 1 on the left with the complement property and then use the
idempotent property. (b) Show the dual proof of part (a).

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