Question

use elementary transformation ( row operations) . find the inverse of A
$\left[\begin{array}{ccc}1&1&2\\3&1&1\\2&3&1\end{array}\right]$

Answer 1

Answer:

i not understand that question write carefully pls

Answer 2

Answer:

Hey mate here is your answer

Step-by-step explanation:

Step 1 :- calculate the determinant of the given matrix.

Step 2 :- Now calculate the cofactors of each element of the matrix if you get the determinant not equal to zero.

Step 3 :- Now arrange all the cofactors of each element in a matrix in their respective places.

Step 4 :- Now calculate adjoint of the given matrix .

Step 5 :- We know that inverse is division of adjoint and determinant of the given matrix.

So calculate inverse.

Thank you

Hope it helps you.....