A=[(-3 4)(-2 0)], B=[(6 −5)(3 −1)]. Tentukan: A×B

Jawaban: A×B = [(-6 11) (-12 10)] Perhatikan konsep perkalian matriks berikut: = [(a b)(c d)] × [(e f)(g h)] = [(ae+bg af+bh)(ce+dg cf+dh)] Diketahui: A = [(-3 4)(-2 0)] B = [(6 −5)(3 −1)] Tentukan: A×B = ... ? Pembahasan: A×B = [(-3 4)(-2 0)] × [(6 −5)(3 −1)] A×B = [(-3(6)+4(3) -3(-5)+4(-1)) (-2(6)+0(3) -2(-5)+0(-1))] A×B = [(-18+12 15-4) (-12+0 10+0)] A×B = [(-6 11) (-12 10)] Jadi, nilai dari A×B = [(-6 11) (-12 10)]