matriks B ialah . . . .
Jawaban:
AB = C
⇔ A⁻¹AB = A⁻¹C
⇔ B = A⁻¹C
⇔ B = (9 -3)⁻¹ (0 54)
(2 1) (5 12)
⇔ B = 1 (1 3) (0 54)
9 + 6 (-2 9) (5 12)
⇔ B = 1 (0 + 15 54 + 36)
15 (0 + 45 -108 + 108)
⇔ B = 1 (15 90)
15 (45 0)
⇔ B = (1 6)
(3 0)
Makara, matriks B = (1 6)
(3 0)