Question

dadas as matrizes A = [2 1, 01] e B = [3 -1, 0 1], calcule det(A) + det (B) e det( A+B)

Answer 1

A+B= 
2+3  1-1
0+0   1+1

5   0
0   2

det (A+B)= 10-0=10

det(A)=
2 1
0 1
det(A)= 2-0=2

det(B)=

3 -1
0  1
det(B)=3-0=3