4 6
−7 5
] dan B = [
−1 3
5 −2
]. Tentukan:
a) A + B
b) A – B
c) A x B
d) A
Diketahui matriks A = [
a)
A + B
= [4….6] + [-1….3]
…[-7…5] ….[5…-2]
= [3…9]
…[-2..3]
b)
A – B
= [4….6] – [-1….3]
…[-7…5]….[5…-2]
= [5….3]
…[-12..7]
c)
A × B
= [4….6] × [-1….3]
…[-7….5]….[5…-2]
= [4(-1) + 6(5)…..4(3) + 6(-2)]
…[-7(-1) + 5(5)…-7(3) + 5(-2)]
= [-4 + 30…..12 – 12]
…[7 + 25…..-21 – 10]
= [26…..0]
…[32…-31]
d)
A = [4….6]
……..[-7…5]
Penjelasan dengan langkah-langkah:
75 dikurang ABC adalah 10