Demonstrate the validity of the following identities by means of truth tables: (a) DeMorgan's theorem for three variables: (x + y + z)' = x'y'z' and (xyz)' = x' + y' + z' (b) The distributive law: x + yz = (x+ y)(x + z) (c) The distributive law: x(y +z)=xy+xz (d) The associative law: x + (y+z)= (x+y)+z (e) The associative law and x(yz)=(xy)z %3D

Demonstrate the validity of the following identities by means of truth tables: (a) DeMorgan's theorem for three variables: (x + y + z)' = x'y'z' and (xyz)' = x' + y' + z' (b) The distributive law: x + yz = (x+ y)(x + z) (c) The distributive law: x(y +z)=xy+xz (d) The associative law: x + (y+z)= (x+y)+z (e) The associative law and x(yz)=(xy)z %3D

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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