(b) Consider the following matrix 1 4 -1 1 -2 -3 2 7 A = 1 0 -1 2 3 5 -3 -5 i. Find an LU-factorization of A. ii. Use these L and U to solve the system Ax = b, where x = 13 and 1 7 b 5

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section9.5: Systems Of Linear Equations In More Than Two Variables
Problem 5E
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(b) Consider the following matrix
1 4 -1
1 -2
-3
2 7
A =
1 0
-1 2
3
5
-3 -5
i. Find an LU-factorization of A.
ii. Use these L and U to solve the system Ax = b, where x =
13
and
1
7
b
5
Transcribed Image Text:(b) Consider the following matrix 1 4 -1 1 -2 -3 2 7 A = 1 0 -1 2 3 5 -3 -5 i. Find an LU-factorization of A. ii. Use these L and U to solve the system Ax = b, where x = 13 and 1 7 b 5
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