Sejam B1 = {(2,1,4,2), (1, −1, −1,1), (2,1,2,1)} e B2 = {(0,1,4,1), (1,0,1,1), (1,1,1,0)} duas bases para o subespaço H

Sejam B1 = {(2,1,4,2), (1, −1, −1,1), (2,1,2,1)} e B2 = {(0,1,4,1), (1,0,1,1), (1,1,1,0)} duas

bases para o subespaço H = {(x, y, z, w) ∈ R4

|x − 2y + z − 2w = 0}. Determine as matrizes mudança

de base.