Răspuns:
AB=
(1 4)*(3 -1`)=
(0 5)(x y)=
(3+4x -1+4y)
(0*3+5x o*(-1)+5y)=
(3+4x -1+4y)
(5x 5y)+
(1 0)
(0 1)=
(3+4x+1 -1+4y+0)
(5x+0 5y+1)=
----------------------------
(4+4x 4y-1)
(5x 5y+1) Matricea 2
_____________________________________
(1 4)
(0, 5)+
(3 -1)
(x y)=
(1+3 4-1)
(0+x 5+y)=
----------------------
(4 3)
(x 5+y) Matricea 1
Egalezi matricea 1 cu matricea 2 si obtii un sistem de 2 ecuatii cu 2 necunoscute , il rezolvi si aflii x, y
