Bas B:
b1 = (1, 1, 2, 1)
b2 = (2, 0, 1, 1)
Bas A:
a1 = 1 b1 + 2 b2 = 1 (1, 1, 2, 1) + 2 (2, 0, 1, 1)
= (1, 1, 2, 1) + (4, 0, 2, 2) = (5, 1, 4, 3)
a2 = 4 b1 + 3 b2 = 4 (1, 1, 2, 1) + 3 (2, 0, 1, 1)
= (4, 4, 8, 4) + (6, 0, 3, 3) = (10, 4, 11, 7)
Tror jag...