Let E = {u1, u2, u3} and F = {b1, b2}, where u1 = (1, 0, −1)T , u2 = (1, 2, 1)T , u3 = (−1, 1, 1)T and b1 = (1, −1)T , b2 = (2, −1)T . Let L be the linear transformation defined by L(x) = (x1 + x2, x1 − x3) T . Find the matrix representing L with respect to the ordered bases E and F.