CUET Preparation Today
CUET
-- Mathematics - Section B1
Determinants
If A is a matrix of order 3, and |A| = -5, then what is the value of |adj A| ?
25
-25
15
-15
|adj A| = \( { |A| }^{ n-1 } \), where n is the order of the matrix
|adj A| = \( { |A| }^{ 3-1 } \)
|adj A| = \( { (-5) }^{ n-1 } \)
|adj A| = 25