# FINDING ADJOINT OF A MATRIX EXAMPLES

Finding Adjoint of a Matrix Examples :

Here we are going to see some example problems of finding adjoint of a matrix.

## How to Find Adjoint of a Matrix ?

Let A be a square matrix of order n.Then the matrix of cofactors of A is defined as the matrix obtained by replacing each element aij of A with the corresponding cofactor Aij .

The adjoint matrix of A is defined as the transpose of the matrix of cofactors of A. It is denoted by adj A.

adj A is a square matrix of order n and

In particular, adj A of a square matrix of order 3 is given below:

## Finding Adjoint of a Matrix Examples  - Questions

Question 1 :

Find the adjoint of the following :

Solution :

## Finding Adjoint of 3 x 3 Matrix

Solution :

Solution :

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