Question

me ajudem por favor

Answer 1

a) i - j
A11= 1-1= 0
A12= 1-2= -1
A21= 2-1= 1
A22= 2-2= 0

A= [ 0 -1
1 0]

b) B11= 1-1=0
B12= 1-2= -1
B13= 1-3=-2
B21= 4-1=3
B22= 4-2=2
B23= 4-3=1
B31=9-1=8
B32= 9-2=7
B33=9-3=6

B= [ 0 -1 -2
3 2 1
8 7 6]

c) C11= 1÷1=1
C21= 2÷1=2
C31= 3÷1=1

C= [ 1
2
1]