(i)
a
b
a
b
b
a
b
a
−

 


 

−
 

(ii)
1
2
3
 
 
 
 
 
[2   3   4]
(iii)
1
2
1
2
3
2
3
2
3
1
−

 


 


 

(iv)
2
3
4
1
3
5
3
4
5
0
2
4
4
5
6
3
0
5
−

 


 


 


 


 

(v)
2 1
1
0
1
3 2
1
2
1
1 1

 


 


 −



−

(vi)
2
3
3
1
3
1
0
1
0
2
3
1
−


−

 


 

−
 



Rationalised 2023-24
MATRICES         59
4 If 
1
2
3
3
1
2
4
1
2
A
5
0
2 , B
4
2
5
and C
0
3
2
1
1
1
2
0
3
1
2
3
−
−












=
=
=












−
−






, then compute
(A+B) and (B – C) Also, verify that A + (B – C) = (A + B) – C 5