You have to solve a system of equations Ax=b. An answer with a relative error smaller than 10-6 is required. You use the PA=LU decomposition algorithm. Knowing that cond(A) ~ 105, how many significant digits at least you need to carry forward in your calculations? Select one: a. 11 O b. 5 c. 16 d. Doesn't matter, as PA=LU is an exact algorithm (no approximations). As long we use all digits from the system we solve we always get an exact answer. e. 6

You have to solve a system of equations Ax=b. An answer with a relative error smaller than 10-6 is required. You use the PA=LU decomposition algorithm. Knowing that cond(A) ~ 105, how many significant digits at least you need to carry forward in your calculations? Select one: a. 11 O b. 5 c. 16 d. Doesn't matter, as PA=LU is an exact algorithm (no approximations). As long we use all digits from the system we solve we always get an exact answer. e. 6

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

There are alot of different answers for this question on chegg. so please make sure you know the answer

You have to solve a system of equations Ax=b. An answer with a relative error
smaller than 10-6 is required.
You use the PA=LU decomposition algorithm.
Knowing that cond(A) ~ 105, how many significant digits at least you need to
carry forward in your calculations?
Select one:
O a. 11
O b. 5
O c. 16
O d. Doesn't matter, as PA=LU is an exact algorithm (no approximations). As
long we use all digits from the system we solve we always get an exact
answer.
O e. 6

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