Let A be a 2-by-2 "symmetric" matrix satisfying the 3 conditions below (where I and 0 indicate the 2-by-2 identity and null matrix, respectively). Find the value of a + b. A³ + 1 = 0, A J 48+48-88-8 = and A A C =

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter3: Determinants
Section3.3: Properties Of Determinants
Problem 63E: Let A be an nn matrix in which the entries of each row sum to zero. Find |A|.
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Let A be a 2-by-2 "symmetric" matrix satisfying the 3 conditions below (where I and 0 indicate the 2-by-2
identity and null matrix, respectively). Find the value of a + b.
A³ + 1 = 0, A
8¹8-8-8-8
and
+
=
A
=
Transcribed Image Text:Let A be a 2-by-2 "symmetric" matrix satisfying the 3 conditions below (where I and 0 indicate the 2-by-2 identity and null matrix, respectively). Find the value of a + b. A³ + 1 = 0, A 8¹8-8-8-8 and + = A =
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