Find the inverse of each of the following matrices:

Question

Philoid · Accepted Answer

Now, |A| = 2 + 15 = 17

Hence, A ^{– 1} exists.

Cofactors of A are

C₁₁ = 1

C₁₂ = 3

C₂₁ = – 5

C₂₂ = 2

Since, adj A =

(adj A) =

=

Now, A ^{– 1} = .adj A

A ^{– 1} = .