2 4]
B = [ -2 5
1 8]
hitunglah matriks axb dan matriks bxa.
Diketahui matriks A= [ 3 -1
Jawaban Terkonfirmasi
Axb
[3 -1][-2 5]
[2 4 ][1 8]
= [(3.-2 + -1.1) (3.5 + -1.8)]
[(2.-2 + 4.1) (2.5 + 4.8)]
= [(-6 – 1) (15 – 8)]
[(-4 + 4) (10 + 32)]
= [-7 7]
[0 42]
bxa
[-2 5][3 -1]
[1 8][2 4]
= [(-2.3 + 5.2) (-2.-1 + 5.4)]
[(1.3 + 8.2) (1.-1 + 8.4)]
= [(-6 + 10) (2 + 20)]
[(3 + 16) (-1 + 32)]
= [4 22]
[19 31]