a. Write the vector (22, 19,0) as a linear combination of ā; = (4,1, -3), ā, = (4,4, 2) and āz = (-2,1, -2). Express your answer in terms of the named vectors. Your answer should be in the form 4āı + 5a2 + 6a3, which would be entered as 4a1 + 5a2 + 6a3. (22,19,0) = b. Represent the vector (22,19.0) in terms of the ordered basis B = {(4,1,–3), (4,4,2).(-2.1.-2)}. Your answer should be a vector of the general form <1,2,3>. [(22.19.0)]