Example I
(i) W = {
: a , b ∈ R} is a subspace of V.
CAUTION :
JUSTIFICATION :
Vector Space V ≡ M2x2 over R (Standard Operations), where M2x2 is the collection of 2x2 real matrices
(i) W = {
Example II
(ii) W = {2x2 real matrices with integer entries} is not a subspace of V.
CAUTION :
JUSTIFICATION :
