Consider the vector space of all upper-triangular 22 2 2matrices, with the basis ?={[1000],[0010],[0001]} B = { [ 1 0 0 0] , [ 0 1 0 0] , [ 0 0 0 1] } . Let ?=[105?3] A = [ 1 5 0 ?3] . Find [?]? [ A ] B .[?]?= [ A ] B =???????? [????????

(1 point) Consider the vector space of all upper-triangular 2 X 2 matrices, with the basis 28 = { 1 0 , 0 1 , 0 0 }. Let A = 1 5 . Find [A]$. 0 0 0 0 0 1 0 [Mg = C]