Question

Invers matriks berikut adalah

Answer 1

Invers matriks A = 1/det.A × adj.A
= 1/(-16)-15 × [-2 -5]
[-3 8]
=1/-31 × [-2 -5]
[-3 8]
= [-2/-31 -5/-31]
[-3/-31 8/-31]
= [2/31 5/31]
[3/31 -8/31]

maaf kalau salah