Calcule la traza de A–1+B–1.
siendo
2 0 0
A 0 4 0
0 0 1

y
0 0 1
B 0 1 0
1 0 0

.
A)
5
4
B)
7
4
C)
9
4
D)
11
4
E)
13
4
MATRICES
2 0 0 0 0 1
A
0
0 4 0 ;B 0 1
1 0
0 1 0
0 0 1
0
0 0 1 1 0 0
   
   = =   
   
   
–1 –1
1
0 0
2 0 0 1
1
A 0 0 ;B 0 1 0
4
1 0 00 0 1
 
 
   
  = =   
     
 
 
tr(A–1+B–1)= tr(A–1) + tr(B–1)
1423 1423

1 1
1 0 1 0
2 4
= + + + + +

7 11
1
4 4
= + =
11
4


a) 5
b) 7
c) 9
d) 11
e) 13