a) Find LU- and LDU-decomposition of the matrix 1 0 1 A = 2 2 5 3 4 5 .

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Could you do part a of this problem? I'm not sure if I did the Lu and LDU-decompositions correctly?

(a) Find LU- and LDU-decomposition of the matrix
1 0 1
A = 2 2 5
345
(b) Let
E₁
=
100]
-2 10
0
0 1
E2
=
1
0
-3
=
Compute Y E3E2E₁ and its inverse Y-1.
Compute Z= E₁ E2 E3 and its inverse Z-¹.
00
10
0 1
.
E3
=
[10
0
0
1
-4
0
1
Transcribed Image Text:(a) Find LU- and LDU-decomposition of the matrix 1 0 1 A = 2 2 5 345 (b) Let E₁ = 100] -2 10 0 0 1 E2 = 1 0 -3 = Compute Y E3E2E₁ and its inverse Y-1. Compute Z= E₁ E2 E3 and its inverse Z-¹. 00 10 0 1 . E3 = [10 0 0 1 -4 0 1
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