Wednesday, 12 December 2012

linear algebra - Determine whether the set H of all matrices form a subspace of M2times2

Determine if the set Z of all matricies form
[ab0d]
is a subspace of M2×2 (the set of all 2×2 matrices).



% This is something I came up with. Can someone look at it and let me know any useful corrections/suggestions to the question please.



Answer:



Without specification as to the nature of a,b and d, it is assumed that a,b,dR



Hence, H is determined to be a subspace of M2×2 because it is closed under scalar addition and scalar multiplication and contains the zero vector when a=b=d=0.

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