Fill in the blanks
If A is invertible matrix of order 3 × 3, then |A-1|= ____.
If A is invertible matrix of order 3 × 3, then |A-1| = |A|-1
Explanation:
Given A is invertible matrix of order 3 × 3.
We know that AA-1 = I.
⇒|A||A-1| = 1
|A|-1
39
Fill in the blanks
If A is invertible matrix of order 3 × 3, then |A-1|= ____.
If A is invertible matrix of order 3 × 3, then |A-1| = |A|-1
Explanation:
Given A is invertible matrix of order 3 × 3.
We know that AA-1 = I.
⇒|A||A-1| = 1
|A|-1