Question
Mathematics Question on Matrices
If for a matrix A, |A| = 6 and adj A=1 4 −1−21k410 , then k is equal to :
A
0
B
1
C
2
D
-1
Answer
-1
Explanation
Solution
Answer (d) -1
If for a matrix A, |A| = 6 and adj A=1 4 −1−21k410 , then k is equal to :
0
1
2
-1
-1
Answer (d) -1