(d) Is the matrix [2]12 [112] [-112 [2]12 a unit in the ring M2 (Z12)? Justify your answer.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section9.8: Determinants
Problem 9E
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(d) Is the matrix
[2] 12 [112]
[[-112 [2]12]
a unit in the ring M2 (Z12)? Justify your answer.
Transcribed Image Text:(d) Is the matrix [2] 12 [112] [[-112 [2]12] a unit in the ring M2 (Z12)? Justify your answer.
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