a- Use the invers matrix to find the solution of the following system. x-2y 1 2x+y=7 b- If det(A + B) = 5, find the value of a where A = and B = 3 2a

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter3: Determinants
Section3.CM: Cumulative Review
Problem 9CM: Solve for x and y in the matrix equation 2AB=I, given A=[1123] and B=[x2y5].
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a- Use the invers matrix to find the solution of the following system.
x- 2y = 1
2x +y =7
F
b-If det(A + B) = 5, find the value of a where A =
and B =
3 2a
.----
Transcribed Image Text:a- Use the invers matrix to find the solution of the following system. x- 2y = 1 2x +y =7 F b-If det(A + B) = 5, find the value of a where A = and B = 3 2a .----
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