In Exercises 21-26, determine A, X, and B if the system is written as AX = R 22. -3x1-8x2 + 4x3 = -2 2x1 +4x2 - 6x3 = 8 131 21. 6x1 + 4x2 – 3x3 = -7 %3D -5x1+3x2 +2x3 = 4
In Exercises 21-26, determine A, X, and B if the system is written as AX = R 22. -3x1-8x2 + 4x3 = -2 2x1 +4x2 - 6x3 = 8 131 21. 6x1 + 4x2 – 3x3 = -7 %3D -5x1+3x2 +2x3 = 4
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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The first image shows the question. The second shows my answer. It doesn't look right to me, so I want to make sure that I interpreted the question and the steps correctly. Am I correct that I cannot get a solution for the problem because the matrix is not square? Are my interpretations of the variables correct?
![6X, +4x3=3X3 =-7
4
5 x,+3X2+2X =
A = aij]
Ba [bi]
%3D
4.
X2=
2 X3
3x
AX-B
5 3
2x3
(A-A)X = A"B
エX= AB
イ= ATB
X2=A B =
ble
-5
RI/6
7-5
4
-3
2.
3.
0
2.
6->
o kg tSR,
3.
2
2.
3.
25
3.
2.
☆ This is not a
$9Vare matrix-
A=
A X =B
F7
X2 4
44-3
64-3
X3
2
15 32
8==7
メ×](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6028aa08-ec21-4a7e-97e5-6a91e94851aa%2F0784f9bf-4d0a-4277-a58b-3d68d7037b1c%2Fpjoaxog_processed.jpeg&w=3840&q=75)
Transcribed Image Text:6X, +4x3=3X3 =-7
4
5 x,+3X2+2X =
A = aij]
Ba [bi]
%3D
4.
X2=
2 X3
3x
AX-B
5 3
2x3
(A-A)X = A"B
エX= AB
イ= ATB
X2=A B =
ble
-5
RI/6
7-5
4
-3
2.
3.
0
2.
6->
o kg tSR,
3.
2
2.
3.
25
3.
2.
☆ This is not a
$9Vare matrix-
A=
A X =B
F7
X2 4
44-3
64-3
X3
2
15 32
8==7
メ×
Transcribed Image Text:is written as AX = R
%3D
.
In Exercises 21-26, determine A, X, and B if the system
22. -3x1-8x2 + 4x3 = -2
2x1 + 4x2 - 6x3 = 8
%3D
6x1 + 4x2 - 3x3 = -7
4
- 5x, + 3x2 + 2x3 =
21.
%3D
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