Suppose that x and y are two real numbers such that x is very close to y. What is the relative error in approximating x by y, and how can it be used to measure the accuracy of the approximation? Choose all that apply. Used to determine the accuracy of an approximation when the actual value of x is not known. (Ix-yl)/x Used to determine the accuracy of an approximation when the actual value of x is known. Olx-yl

Suppose that x and y are two real numbers such that x is very close to y. What is the relative error in approximating x by y, and how can it be used to measure the accuracy of the approximation? Choose all that apply. Used to determine the accuracy of an approximation when the actual value of x is not known. (Ix-yl)/x Used to determine the accuracy of an approximation when the actual value of x is known. Olx-yl

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

Suppose that x and y are two real numbers such that x is very close to y. What is the relative
error in approximating x by y, and how can it be used to measure the accuracy of the
approximation? Choose all that apply.
Used to determine the accuracy of an approximation when the actual value of x is not known.
(|x-y|)/x
Used to determine the accuracy of an approximation when the actual value of x is known.
|x - yl

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