Let H be the subset of GL(2, R) consisting of the identity matrix together with all invertible 2 × 2 es (a ) such that ab < 0. Is H a subgroup of GL(2, R)? Justify your answer.
Let H be the subset of GL(2, R) consisting of the identity matrix together with all invertible 2 × 2 es (a ) such that ab < 0. Is H a subgroup of GL(2, R)? Justify your answer.
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter3: Matrices
Section3.6: Introduction To Linear Transformations
Problem 55EQ
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![Let H be the subset of GL(2, R) consisting of the identity matrix together with all invertible 2 x 2
´a _0
es
:( ) such that ab < 0. Is H a subgroup of GL(2, R)? Justify your answer.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6915687c-4f06-4661-ac02-aefc88931b4a%2F502b4053-be07-4cdd-94d2-87fccd131eff%2Fjnomyid_processed.png&w=3840&q=75)
Transcribed Image Text:Let H be the subset of GL(2, R) consisting of the identity matrix together with all invertible 2 x 2
´a _0
es
:( ) such that ab < 0. Is H a subgroup of GL(2, R)? Justify your answer.
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