Find an LU-factorization of the coefficient matrix to solve the linear system: show solutions. X + z = 3 a. 2x + y + 2z = 7 3x + 2y + 6z = 8 x₁² b. 2x₁ + x₂ + x3 = 3x2 + X3 - Х4 - 2x3 = 2x₁ + x₂ + x3 - 2x4 = 7 -3 2 8

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question
Find an LU-factorization of the coefficient matrix to
solve the linear system:
show solutions.
X
+ z = 3
a.
2x + y + 2z = 7
3x + 2y + 6z = 8
-
b. 2x₁ + x₂ + x3 =
X4
3x₂ + x3
x4
-2x3
=
2x₁ +
x₂ + x3 - 2x4 8
=
7
328
-3
2
Transcribed Image Text:Find an LU-factorization of the coefficient matrix to solve the linear system: show solutions. X + z = 3 a. 2x + y + 2z = 7 3x + 2y + 6z = 8 - b. 2x₁ + x₂ + x3 = X4 3x₂ + x3 x4 -2x3 = 2x₁ + x₂ + x3 - 2x4 8 = 7 328 -3 2
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