Minor of a matrix :
Let A = [a ij] be a determinant of order n. The minor of an arbitrary element aij is the determinant obtained by deleting the ith row and jth column in which the element aij stands. The minor of aij by Mij.
Cofactors :
The cofactor is a signed minor. The cofactor of aij is denoted by Aij and is defined as Aij = (1) ^(i+j) Mij.

Example 1:
Find the minor and cofactor of the following matrix

Minor of 3
= 

= [6(4)]
= (6+4)
= 2
Minor of 4
= 

= [010]
= (10)
= 10
Minor of 1
= 

= [0(5)]
= [0+5]
= 5
Minor of 0
= 

= [24(2)]
= [24+2]
= 26
Minor of 1
= 

= [185]
= 13
Minor of 2
= 

= [620]
= 26
Minor of 5
= 

= [8(1)]
= (8+1)
= 9
Minor of 2
= 

= [60]
= 6
Minor of 6
= 

= [30]
= 3
Minor matrix

Cofactor matrix

Example 2 :
Find the minor and cofactor of the following matrix

Minor of 3
= 

= [20]
= 2
Minor of 1
= 

= [20]
= 2
Minor of 1
= 

= [4(2)]
= [4+2]
= 6
Minor of 2
= 

= [1(2)]
= [1+2]
= 1
Minor of 2
= 

= [3(1)]
= [3+1]
= 2
Minor of 0
= 

= [61]
= 5
Minor of 1
= 

= [02]
= 2
Minor of 2
= 

= [0(2)]
= 2
Minor of 1
= 

= [62]
= 8
Minor matrix

Cofactor matrix

(1) Find the minor of the matrix

(2) Find the minor of the matrix

(3) Find the minor of the matrix

(4) Find the minor of the matrix

(5) Find the minor of the matrix

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