[2] 1 4 7. 3 30 2 5 -1 1

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section9.8: Determinants
Problem 34E
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Question

7 and 14 help please
(Please us Gauss Jordan Method for 7)

L-1
[2
23.
1
4]
7. 3 2
5
[0 -1
1
and 10, find th
erse of the
In Exercise
matrix, if it exis
-1
000c
0
0
0 0
0
Ο
600040
000300
002000
0
0
0
Show that the matrix
[2-31
is invertible, and hind
b. Use the result in find the
of t
equations
5x₁-7x=-3.
2x, - 3.x₂ = 4,
14. Using the inverse of the matrix in Exercise
7, find the solution of the system of
equations
2x + x
+ 4x₁ = 5
3x + 2x
+ 5x3 = 3
−x + x = 8.
Transcribed Image Text:L-1 [2 23. 1 4] 7. 3 2 5 [0 -1 1 and 10, find th erse of the In Exercise matrix, if it exis -1 000c 0 0 0 0 0 Ο 600040 000300 002000 0 0 0 Show that the matrix [2-31 is invertible, and hind b. Use the result in find the of t equations 5x₁-7x=-3. 2x, - 3.x₂ = 4, 14. Using the inverse of the matrix in Exercise 7, find the solution of the system of equations 2x + x + 4x₁ = 5 3x + 2x + 5x3 = 3 −x + x = 8.
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