Q. 14.0( 63 Votes )

If <i

Answer :


We know that A-1 is given as: if |A| ≠ 0

|A| =

A is invertible; now we can proceed to find the adj(A)

Adj(A) = transpose of co-factor matrix of A.

Adj(A) =

We can observe by comparing A and adj(A) that:

Adj(A) = -A

A-1 =

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