# Matrix operations and subgroups

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Let G = GLsub2 (R).

a) show that T = {[a b] ad not equal to 0} is a subgroup of G

{[0 d] }

b) Show that D = {[a 0] ad not equal to 0} is a subgroup of G

{[0 d].

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##### Solution Summary

There are several proofs regarding subgroups in this solution.

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